Redis Software release notes 8.0.20-96 (August 2026)

Bug fixes for Active-Active database upgrades and synchronization, internode encryption certificates, upgrades on RHEL 9 with an earlier OpenSSL version, and metrics exporter startup. Internal fixes and improvements.

Redis Software

This is a maintenance release for ​​Redis Software version 8.0.20.

Highlights

This version offers:

  • Bug fixes for Active-Active database upgrades and synchronization, internode encryption certificates, upgrades on RHEL 9 with an earlier OpenSSL version, and metrics exporter startup

  • Internal fixes and improvements

New in this release

Redis database versions and feature sets

Redis Software version 8.0.20 includes the following Redis database versions: 8.6.2, 8.4.0, 8.2.1, 8.0.2, 7.4.3, 7.2.7, and 6.2.13.

The default Redis database version is 8.6.

Redis Software includes multiple feature sets, compatible with different Redis database versions.

Show feature set details

The following table shows which Redis modules are compatible with each Redis database version included in this release.

Redis database version Compatible Redis modules
8.6 RediSearch 8.6
RedisJSON 8.6
RedisTimeSeries 8.6
RedisBloom 8.6
See What's new in Redis 8.6 and Redis Open Source 8.6 release notes
8.4 RediSearch 8.4
RedisJSON 8.4
RedisTimeSeries 8.4
RedisBloom 8.4
See What's new in Redis 8.4 and Redis Open Source 8.4 release notes
8.2 RediSearch 8.2
RedisJSON 8.2
RedisTimeSeries 8.2
RedisBloom 8.2
See What's new in Redis 8.2 and Redis Open Source 8.2 release notes
8.0 RediSearch 8.0
RedisJSON 8.0
RedisTimeSeries 8.0
RedisBloom 8.0
See What's new in Redis 8.0 and Redis Open Source 8.0 release notes
7.4 RediSearch 2.10
RedisJSON 2.8
RedisTimeSeries 1.12
RedisBloom 2.8
7.2 RediSearch 2.8
RedisJSON 2.6
RedisTimeSeries 1.10
RedisBloom 2.6
6.2 RediSearch 2.6
RedisJSON 2.4
RedisTimeSeries 1.8
RedisBloom 2.4

Resolved issues

  • RS196656: Fixed an issue where upgrading Redis Software failed partway through on RHEL 9 nodes running an OpenSSL version earlier than 3.3.

  • RS197912: Fixed an issue where the self-upgrade status for an Active-Active database could stay non-final until the API client timed out instead of reporting a final outcome.

  • RS199887: Fixed an issue where some wrapper scripts relied on the installation adding the bin directory to PATH, which prevented the metrics exporters from starting when the installation was configured not to modify the environment.

  • RS208976: Fixed an issue where an Active-Active database upgrade could stall during post-upgrade verification when a shard was still loading its dataset, which left the feature set version out of sync and the database stuck in a pending state.

  • RS208996: Fixed an issue where applying a custom internode encryption certificate restarted the heartbeat service and made the cluster management API on port 9443 unreachable on all nodes for several minutes.

  • RS209759: Fixed an issue where an unrecognized configuration change in the Active-Active (CRDB) syncer triggered a full synchronization instead of being ignored.

  • RS209889: Fixed an issue where an Active-Active database resent the full dataset instead of only changes during a full state sync when an internal version clock exceeded 32 bits.

Version changes

OpenSSL version on RHEL 9

Redis Software versions 8.0.16 through 8.0.20-68 required OpenSSL 3.3 or later on RHEL 9. That requirement no longer applies, because Redis Software is now built against an earlier OpenSSL version.

On RHEL 9, you no longer need to upgrade the openssl and openssl-libs packages before you upgrade Redis Software.

Reserved ports

Make sure the following ports are open before upgrading Redis Software.

As of Redis Software version 8.0.20, port 3357 is optional rather than reserved:

Port Process name Usage
3357 reconciliation_tree_grpc Internal communication

Ports reserved as of Redis Software version 7.22.0:

Port Process name Usage
3346 cluster_api_internal Cluster API internal port
3351 cluster_watchdog_grpc_api Cluster watchdog now supports gRPC
3352 grpc_service_mesh gRPC communication between nodes
3353 local_grpc_service_mesh Local gRPC services
3354 grpc_gossip_envoy gRPC gossip protocol communication between nodes
3355 authentication_service Authentication service internal port

Ports reserved as of Redis Software version 7.8.2:

Port Process name Usage
3347 cert_exporter Reports cluster certificate metrics
3348 process_exporter Reports process metrics for DMC and Redis processes
3349 cluster_wd_exporter Reports cluster watchdog metrics
3350 db_controller Internode communication
9091 node_exporter Reports host node metrics related to CPU, memory, disk, and more
9125 statsd_exporter Reports push metrics related to the DMC and syncer, and some cluster and node metrics

See Ports and port ranges used by Redis Software for a complete list.

Supported platforms

The following table provides a snapshot of supported platforms as of this Redis Software release. See the supported platforms reference for more details about operating system compatibility.

Show supported platforms

Supported – The platform is supported for this version of Redis Software and Redis Stack modules.

⚠️ Deprecation warning – The platform is still supported for this version of Redis Software, but support will be removed in a future release.

Redis Software
major versions
8.0 7.22 7.8 7.4 7.2 6.4 6.2
Release date Oct 2025 May 2025 Nov 2024 Feb 2024 Aug 2023 Feb 2023 Aug 2021
End-of-life date Determined after
next major release
Oct 2027 May 2027 Nov 2026 Feb 2026 Aug 2025 Feb 2025
Platforms
RHEL 9 &
compatible distros1
RHEL 9
FIPS mode5
RHEL 8 &
compatible distros1
RHEL 7 &
compatible distros1
⚠️ ⚠️ ⚠️
Ubuntu 22.042
Ubuntu 20.042
Ubuntu 18.042 ⚠️ ⚠️ ⚠️ ⚠️
Ubuntu 16.042 ⚠️ ⚠️ ⚠️
Amazon Linux 20236
Amazon Linux 2
Amazon Linux 1 ⚠️ ⚠️ ⚠️
Kubernetes3
Docker4
  1. The RHEL-compatible distributions CentOS, CentOS Stream, Alma, and Rocky are supported if they have full RHEL compatibility. Oracle Linux running the Red Hat Compatible Kernel (RHCK) is supported, but the Unbreakable Enterprise Kernel (UEK) is not supported.

  2. The server version of Ubuntu is recommended for production installations. The desktop version is only recommended for development deployments.

  3. See the Redis Enterprise for Kubernetes documentation for details about support per version and Kubernetes distribution.

  4. Docker images of Redis Software are certified for development and testing only.

  5. Supported only if FIPS was enabled during RHEL installation to ensure FIPS compliance.

  6. Amazon Linux 2023 support was added in Redis Software version 8.0.20.

Downloads

The following table shows the SHA256 checksums for the available packages:

Package SHA256 checksum (8.0.20-96 August release)
Ubuntu 20 f9d55d1fb35ddb3547afe2474b38fb1dcdeaa3a898976306cef66f21f2a4a441
Ubuntu 22 (amd64) 3df873bfe633b94b5909efe32d0fe3d65c57fe8bf155b21b1a5425b40299bb8b
Ubuntu 22 (arm64) 6a8bb29d06d5a37575071839bc9b14f761aba65ac44c955e1a34293abe224681
Red Hat Enterprise Linux (RHEL) 8 d7b45466cbec89e8f4a3519439358085362bf17b1004106618cae759790f249f
Red Hat Enterprise Linux (RHEL) 9 (amd64) 376f37b5c1f04ecd67ca34c8ffd43521da8fc69501fdcca644b09f8f8f4938c1
Red Hat Enterprise Linux (RHEL) 9 (arm64) a294ebeddf8d69c11b1039782e0c4fecfdaeaaefd49c7dc422853f5769f1526d
Amazon Linux 2 5a17cbc0f0038cd649acb8f7ba0826941129fc345feb0b598cebfb71d1d1d958
Amazon Linux 2023 (amd64) 1db0bb0e492f0bb40f7453d4909fe76259c8a4ac36cdb91c2c268b139132c616
Amazon Linux 2023 (arm64) 6b15cf7e411d447984ab8486c310e422c54a97917475057bbd3c9aae3533ae4e

Known issues

  • RS155734: Endpoint availability metrics do not work as expected due to a calculation error.

Known limitations

Redis Search query failures during rolling upgrades across the 8.4 version boundary

Redis Search queries can fail during a rolling upgrade when a cluster contains shards running Redis versions earlier than 8.4 and shards running Redis version 8.4 or later, due to an internal protocol change introduced in version 8.4. This issue affects only clusters where parallel_shards_upgrade has been changed from its default value of 0. If both conditions apply, expect Redis Search downtime until all nodes are upgraded.

Trim ACKED not supported for Active-Active 8.4 databases

For Active-Active databases running Redis database version 8.4, the ACKED option is not supported for trimming commands.

Rolling upgrade limitation for clusters with custom or deprecated modules

Due to module handling changes introduced in Redis Software version 8.0, upgrading a cluster that contains custom or deprecated modules, such as RedisGraph and RedisGears v2, can become stuck when adding a new node to the cluster during a rolling upgrade.

Module commands limitation during Active-Active database upgrades to Redis 8.0

When upgrading an Active-Active database to Redis version 8.0, you cannot use module commands until all Active-Active database instances have been upgraded. Currently, these commands are not blocked automatically.

Redis 8.0 database cannot be created with flash

You cannot create a Redis 8.0 database with flash storage enabled. Create a Redis 8.0 database with RAM-only storage instead, or use Redis 8.2 for flash-enabled (Redis Flex) databases.

Cluster Manager UI limitations

The following legacy UI features are not yet available in the new Cluster Manager UI:

Security

Redis Open Source security fixes compatibility

As part of Redis's commitment to security, Redis Software implements the latest security fixes available with Redis Open Source. Redis Software has already included the fixes for the relevant CVEs.

Some CVEs announced for Redis Open Source do not affect Redis Software due to different or additional functionality available in Redis Software that is not available in Redis Open Source.

Redis Software 8.0.20-96 supports Redis Open Source 8.6, 8.4, 8.2, 8.0, 7.4, 7.2, and 6.2. Below is the list of Redis Open Source CVEs and other security vulnerabilities fixed by version.

Redis 8.6.x
  • VSET: Large VADD REDUCE values can lead to out-of-memory crashes or buffer overflow.

  • (CVE-2026-23479) When a blocked client is evicted while re-executing a blocked command, an authenticated user may trigger a use-after-free and potentially lead to remote code execution.

  • (CVE‑2026‑25243) A vulnerability in the Redis RESTORE command allows an authenticated user to trigger an invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-25588) A vulnerability in the RESTORE command, when used with the RedisTimeSeries module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE‑2026‑25589) A vulnerability in the RESTORE command, when used with the RedisBloom module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-23631) An authenticated user may exploit the synchronization mechanism of the master-replica and trigger a use-after-free vulnerability, potentially leading to remote code execution. The bug affects only replicas that are configured, or may be configured with replica-read-only disabled, and exists in all versions of Redis with Lua scripting.

  • Insufficient sanitization of Lua script error messages can allow an authenticated user with EVAL permission to inject arbitrary RESP protocol responses, leading to denial of service, data manipulation, and connection pool poisoning.

  • RedisBloom: Integer overflow in TopK RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in td_histogram_t RDB loading may lead to heap buffer overflow.

  • RedisBloom: Missing validation in CuckooFilter RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in SBChain and CMSketch RDB loading may lead to heap out-of-bounds write.

  • Added validation of limits during RDB load and data creation to avoid resource exhaustion and Denial-of-Service (DoS) vulnerabilities.

Redis 8.4.x
  • VSET: Large VADD REDUCE values can lead to out-of-memory crashes or buffer overflow.

  • (CVE-2026-23479) When a blocked client is evicted while re-executing a blocked command, an authenticated user may trigger a use-after-free and potentially lead to remote code execution.

  • (CVE‑2026‑25243) A vulnerability in the Redis RESTORE command allows an authenticated user to trigger an invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-25588) A vulnerability in the RESTORE command, when used with the RedisTimeSeries module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE‑2026‑25589) A vulnerability in the RESTORE command, when used with the RedisBloom module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-23631) An authenticated user may exploit the synchronization mechanism of the master-replica and trigger a use-after-free vulnerability, potentially leading to remote code execution. The bug affects only replicas that are configured, or may be configured with replica-read-only disabled, and exists in all versions of Redis with Lua scripting.

  • Insufficient sanitization of Lua script error messages can allow an authenticated user with EVAL permission to inject arbitrary RESP protocol responses, leading to denial of service, data manipulation, and connection pool poisoning.

  • RedisBloom: Integer overflow in TopK RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in td_histogram_t RDB loading may lead to heap buffer overflow.

  • RedisBloom: Missing validation in CuckooFilter RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in SBChain and CMSketch RDB loading may lead to heap out-of-bounds write.

  • Added validation of limits during RDB load and data creation to avoid resource exhaustion and Denial-of-Service (DoS) vulnerabilities.

Redis 8.2.x
  • VSET: Large VADD REDUCE values can lead to out-of-memory crashes or buffer overflow.

  • (CVE-2026-23479) When a blocked client is evicted while re-executing a blocked command, an authenticated user may trigger a use-after-free and potentially lead to remote code execution.

  • (CVE‑2026‑25243) A vulnerability in the Redis RESTORE command allows an authenticated user to trigger an invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-25588) A vulnerability in the RESTORE command, when used with the RedisTimeSeries module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE‑2026‑25589) A vulnerability in the RESTORE command, when used with the RedisBloom module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-23631) An authenticated user may exploit the synchronization mechanism of the master-replica and trigger a use-after-free vulnerability, potentially leading to remote code execution. The bug affects only replicas that are configured, or may be configured with replica-read-only disabled, and exists in all versions of Redis with Lua scripting.

  • Insufficient sanitization of Lua script error messages can allow an authenticated user with EVAL permission to inject arbitrary RESP protocol responses, leading to denial of service, data manipulation, and connection pool poisoning.

  • RedisBloom: Integer overflow in TopK RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in td_histogram_t RDB loading may lead to heap buffer overflow.

  • RedisBloom: Missing validation in CuckooFilter RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in SBChain and CMSketch RDB loading may lead to heap out-of-bounds write.

  • Added validation of limits during RDB load and data creation to avoid resource exhaustion and Denial-of-Service (DoS) vulnerabilities.

  • RedisBloom: Restore invalid filter.

  • (CVE-2025-62507) A user can run the XACKDEL command with multiple IDs and trigger a stack buffer overflow, which can potentially lead to remote code execution.

  • The HGETEX command can lead to a buffer overflow.

  • Integer overflow in hllPatLen.

  • RedisBloom: Cuckoo filter counter overflow.

  • RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

  • RedisBloom: Reachable assert in TopK_Create

  • RedisBloom: Out-of-bounds access with empty Bloom chains.

  • RedisBloom: Division by zero in Cuckoo filter insertion.

  • (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

  • (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

  • (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

  • (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

Redis 8.0.x
  • VSET: Large VADD REDUCE values can lead to out-of-memory crashes or buffer overflow.

  • (CVE-2026-23479) When a blocked client is evicted while re-executing a blocked command, an authenticated user may trigger a use-after-free and potentially lead to remote code execution.

  • (CVE‑2026‑25243) A vulnerability in the Redis RESTORE command allows an authenticated user to trigger an invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-25588) A vulnerability in the RESTORE command, when used with the RedisTimeSeries module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE‑2026‑25589) A vulnerability in the RESTORE command, when used with the RedisBloom module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-23631) An authenticated user may exploit the synchronization mechanism of the master-replica and trigger a use-after-free vulnerability, potentially leading to remote code execution. The bug affects only replicas that are configured, or may be configured with replica-read-only disabled, and exists in all versions of Redis with Lua scripting.

  • Insufficient sanitization of Lua script error messages can allow an authenticated user with EVAL permission to inject arbitrary RESP protocol responses, leading to denial of service, data manipulation, and connection pool poisoning.

  • RedisBloom: Integer overflow in TopK RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in td_histogram_t RDB loading may lead to heap buffer overflow.

  • RedisBloom: Missing validation in CuckooFilter RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in SBChain and CMSketch RDB loading may lead to heap out-of-bounds write.

  • Added validation of limits during RDB load and data creation to avoid resource exhaustion and Denial-of-Service (DoS) vulnerabilities.

  • RedisBloom: Restore invalid filter.

  • The HGETEX command can lead to a buffer overflow.

  • Integer overflow in hllPatLen.

  • RedisBloom: Cuckoo filter counter overflow.

  • RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

  • RedisBloom: Reachable assert in TopK_Create

  • RedisBloom: Out-of-bounds access with empty Bloom chains.

  • RedisBloom: Division by zero in Cuckoo filter insertion.

  • (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

  • (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

  • (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

  • (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

Redis 7.4.x
  • (CVE-2026-23479) When a blocked client is evicted while re-executing a blocked command, an authenticated user may trigger a use-after-free and potentially lead to remote code execution.

  • (CVE‑2026‑25243) A vulnerability in the Redis RESTORE command allows an authenticated user to trigger an invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-25588) A vulnerability in the RESTORE command, when used with the RedisTimeSeries module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE‑2026‑25589) A vulnerability in the RESTORE command, when used with the RedisBloom module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-23631) An authenticated user may exploit the synchronization mechanism of the master-replica and trigger a use-after-free vulnerability, potentially leading to remote code execution. The bug affects only replicas that are configured, or may be configured with replica-read-only disabled, and exists in all versions of Redis with Lua scripting.

  • Insufficient sanitization of Lua script error messages can allow an authenticated user with EVAL permission to inject arbitrary RESP protocol responses, leading to denial of service, data manipulation, and connection pool poisoning.

  • RedisBloom: Integer overflow in TopK RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in td_histogram_t RDB loading may lead to heap buffer overflow.

  • RedisBloom: Missing validation in CuckooFilter RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in SBChain and CMSketch RDB loading may lead to heap out-of-bounds write.

  • Added validation of limits during RDB load and data creation to avoid resource exhaustion and Denial-of-Service (DoS) vulnerabilities.

  • RedisBloom: Restore invalid filter.

  • Integer overflow in hllPatLen.

  • RedisBloom: Cuckoo filter counter overflow.

  • RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

  • RedisBloom: Reachable assert in TopK_Create

  • RedisBloom: Out-of-bounds access with empty Bloom chains.

  • RedisBloom: Division by zero in Cuckoo filter insertion.

  • (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

  • (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

  • (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

  • (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

  • (CVE-2025-32023) An authenticated user can use a specially crafted string to trigger a stack/heap out-of-bounds write on HyperLogLog operations, which can lead to remote code execution.

  • (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

Redis 7.2.x
  • (CVE-2026-23479) When a blocked client is evicted while re-executing a blocked command, an authenticated user may trigger a use-after-free and potentially lead to remote code execution.

  • (CVE‑2026‑25243) A vulnerability in the Redis RESTORE command allows an authenticated user to trigger an invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-25588) A vulnerability in the RESTORE command, when used with the RedisTimeSeries module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE‑2026‑25589) A vulnerability in the RESTORE command, when used with the RedisBloom module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-23631) An authenticated user may exploit the synchronization mechanism of the master-replica and trigger a use-after-free vulnerability, potentially leading to remote code execution. The bug affects only replicas that are configured, or may be configured with replica-read-only disabled, and exists in all versions of Redis with Lua scripting.

  • Insufficient sanitization of Lua script error messages can allow an authenticated user with EVAL permission to inject arbitrary RESP protocol responses, leading to denial of service, data manipulation, and connection pool poisoning.

  • RedisBloom: Integer overflow in TopK RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in td_histogram_t RDB loading may lead to heap buffer overflow.

  • RedisBloom: Missing validation in CuckooFilter RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in SBChain and CMSketch RDB loading may lead to heap out-of-bounds write.

  • Added validation of limits during RDB load and data creation to avoid resource exhaustion and Denial-of-Service (DoS) vulnerabilities.

  • RedisBloom: Restore invalid filter.

  • Integer overflow in hllPatLen.

  • RedisBloom: Cuckoo filter counter overflow.

  • RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

  • RedisBloom: Reachable assert in TopK_Create

  • RedisBloom: Out-of-bounds access with empty Bloom chains.

  • RedisBloom: Division by zero in Cuckoo filter insertion.

  • (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

  • (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

  • (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

  • (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

  • (CVE-2025-32023) An authenticated user can use a specially crafted string to trigger a stack/heap out-of-bounds write on HyperLogLog operations, which can lead to remote code execution.

  • (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

  • (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

  • (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as KEYS, SCAN, PSUBSCRIBE, FUNCTION LIST, COMMAND LIST, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

  • (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

  • (CVE-2023-41053) Redis does not correctly identify keys accessed by SORT_RO and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.2.1)

Redis 7.0.x
  • (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

  • (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as KEYS, SCAN, PSUBSCRIBE, FUNCTION LIST, COMMAND LIST, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

  • (CVE-2023-41056) In some cases, Redis may incorrectly handle resizing of memory buffers, which can result in incorrect accounting of buffer sizes and lead to heap overflow and potential remote code execution.

  • (CVE-2023-41053) Redis does not correctly identify keys accessed by SORT_RO and, as a result, may grant users executing this command access to keys that are not explicitly authorized by the ACL configuration. (Redis 7.0.13)

  • (CVE-2023-36824) Extracting key names from a command and a list of arguments may, in some cases, trigger a heap overflow and result in reading random heap memory, heap corruption, and potentially remote code execution. Specifically: using COMMAND GETKEYS* and validation of key names in ACL rules. (Redis 7.0.12)

  • (CVE-2023-28856) Authenticated users can use the HINCRBYFLOAT command to create an invalid hash field that will crash Redis on access. (Redis 7.0.11)

  • (CVE-2023-28425) Specially crafted MSETNX commands can lead to assertion and denial-of-service. (Redis 7.0.10)

  • (CVE-2023-25155) Specially crafted SRANDMEMBER, ZRANDMEMBER, and HRANDFIELD commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 7.0.9)

  • (CVE-2023-22458) Integer overflow in the Redis HRANDFIELD and ZRANDMEMBER commands can lead to denial-of-service. (Redis 7.0.8)

  • (CVE-2022-36021) String matching commands (like SCAN or KEYS) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 7.0.9)

  • (CVE-2022-35977) Integer overflow in the Redis SETRANGE and SORT/SORT_RO commands can drive Redis to OOM panic. (Redis 7.0.8)

  • (CVE-2022-35951) Executing an XAUTOCLAIM command on a stream key in a specific state, with a specially crafted COUNT argument, may cause an integer overflow, a subsequent heap overflow, and potentially lead to remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.5)

  • (CVE-2022-31144) A specially crafted XAUTOCLAIM command on a stream key in a specific state may result in heap overflow and potentially remote code execution. The problem affects Redis versions 7.0.0 or newer. (Redis 7.0.4)

  • (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 7.0.12)

  • (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the redis-server process. This issue affects all versions of Redis. (Redis 7.0.0)

  • (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 7.0.0)

Redis 6.2.x
  • (CVE-2026-23479) When a blocked client is evicted while re-executing a blocked command, an authenticated user may trigger a use-after-free and potentially lead to remote code execution.

  • (CVE‑2026‑25243) A vulnerability in the Redis RESTORE command allows an authenticated user to trigger an invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-25588) A vulnerability in the RESTORE command, when used with the RedisTimeSeries module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE‑2026‑25589) A vulnerability in the RESTORE command, when used with the RedisBloom module, allows an authenticated attacker to trigger invalid memory access via a specially crafted serialized payload, potentially resulting in remote code execution.

  • (CVE-2026-23631) An authenticated user may exploit the synchronization mechanism of the master-replica and trigger a use-after-free vulnerability, potentially leading to remote code execution. The bug affects only replicas that are configured, or may be configured with replica-read-only disabled, and exists in all versions of Redis with Lua scripting.

  • Insufficient sanitization of Lua script error messages can allow an authenticated user with EVAL permission to inject arbitrary RESP protocol responses, leading to denial of service, data manipulation, and connection pool poisoning.

  • RedisBloom: Integer overflow in TopK RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in td_histogram_t RDB loading may lead to heap buffer overflow.

  • RedisBloom: Missing validation in CuckooFilter RDB loading may lead to heap out-of-bounds access.

  • RedisBloom: Missing validation in SBChain and CMSketch RDB loading may lead to heap out-of-bounds write.

  • Added validation of limits during RDB load and data creation to avoid resource exhaustion and Denial-of-Service (DoS) vulnerabilities.

  • RedisBloom: Restore invalid filter.

  • Integer overflow in hllPatLen.

  • RedisBloom: Cuckoo filter counter overflow.

  • RedisBloom: Invalid Bloom filters can cause arbitrary memory reads and writes.

  • RedisBloom: Reachable assert in TopK_Create

  • RedisBloom: Out-of-bounds access with empty Bloom chains.

  • RedisBloom: Division by zero in Cuckoo filter insertion.

  • (CVE-2025-46818) An authenticated user may use a specially crafted Lua script to manipulate different LUA objects and potentially run their own code in the context of another user.

  • (CVE-2025-46819) An authenticated user may use a specially crafted LUA script to read out-of-bound data or crash the server and lead to subsequent denial of service.

  • (CVE-2025-46817) An authenticated user may use a specially crafted Lua script to cause an integer overflow and potentially lead to remote code execution.

  • (CVE-2025-49844) An authenticated user may use a specially crafted Lua script to manipulate the garbage collector, trigger a use-after-free, and potentially lead to remote code execution.

  • (CVE-2025-32023) An authenticated user can use a specially crafted string to trigger a stack/heap out-of-bounds write on HyperLogLog operations, which can lead to remote code execution.

  • (CVE-2025-21605) An unauthenticated client can cause unlimited growth of output buffers until the server runs out of memory or is terminated, which can lead to denial-of-service.

  • (CVE-2024-31449) An authenticated user may use a specially crafted Lua script to trigger a stack buffer overflow in the bit library, which may potentially lead to remote code execution.

  • (CVE-2024-31228) An authenticated user can trigger a denial-of-service by using specially crafted, long string match patterns on supported commands such as KEYS, SCAN, PSUBSCRIBE, FUNCTION LIST, COMMAND LIST, and ACL definitions. Matching of extremely long patterns may result in unbounded recursion, leading to stack overflow and process crashes.

  • (CVE-2023-28856) Authenticated users can use the HINCRBYFLOAT command to create an invalid hash field that will crash Redis on access. (Redis 6.2.12)

  • (CVE-2023-25155) Specially crafted SRANDMEMBER, ZRANDMEMBER, and HRANDFIELD commands can trigger an integer overflow, resulting in a runtime assertion and termination of the Redis server process. (Redis 6.2.11)

  • (CVE-2023-22458) Integer overflow in the Redis HRANDFIELD and ZRANDMEMBER commands can lead to denial-of-service. (Redis 6.2.9)

  • (CVE-2022-36021) String matching commands (like SCAN or KEYS) with a specially crafted pattern to trigger a denial-of-service attack on Redis can cause it to hang and consume 100% CPU time. (Redis 6.2.11)

  • (CVE-2022-35977) Integer overflow in the Redis SETRANGE and SORT/SORT_RO commands can drive Redis to OOM panic. (Redis 6.2.9)

  • (CVE-2022-24834) A specially crafted Lua script executing in Redis can trigger a heap overflow in the cjson and cmsgpack libraries, and result in heap corruption and potentially remote code execution. The problem exists in all versions of Redis with Lua scripting support, starting from 2.6, and affects only authenticated and authorized users. (Redis 6.2.13)

  • (CVE-2022-24736) An attacker attempting to load a specially crafted Lua script can cause NULL pointer dereference which will result in a crash of the redis-server process. This issue affects all versions of Redis. (Redis 6.2.7)

  • (CVE-2022-24735) By exploiting weaknesses in the Lua script execution environment, an attacker with access to Redis can inject Lua code that will execute with the (potentially higher) privileges of another Redis user. (Redis 6.2.7)

  • (CVE-2021-41099) Integer to heap buffer overflow handling certain string commands and network payloads, when proto-max-bulk-len is manually configured to a non-default, very large value. (Redis 6.2.6)

  • (CVE-2021-32762) Integer to heap buffer overflow issue in redis-cli and redis-sentinel parsing large multi-bulk replies on some older and less common platforms. (Redis 6.2.6)

  • (CVE-2021-32761) An integer overflow bug in Redis version 2.2 or newer can be exploited using the BITFIELD command to corrupt the heap and potentially result with remote code execution. (Redis 6.2.5)

  • (CVE-2021-32687) Integer to heap buffer overflow with intsets, when set-max-intset-entries is manually configured to a non-default, very large value. (Redis 6.2.6)

  • (CVE-2021-32675) Denial Of Service when processing RESP request payloads with a large number of elements on many connections. (Redis 6.2.6)

  • (CVE-2021-32672) Random heap reading issue with Lua Debugger. (Redis 6.2.6)

  • (CVE-2021-32628) Integer to heap buffer overflow handling ziplist-encoded data types, when configuring a large, non-default value for hash-max-ziplist-entries, hash-max-ziplist-value, zset-max-ziplist-entries or zset-max-ziplist-value. (Redis 6.2.6)

  • (CVE-2021-32627) Integer to heap buffer overflow issue with streams, when configuring a non-default, large value for proto-max-bulk-len and client-query-buffer-limit. (Redis 6.2.6)

  • (CVE-2021-32626) Specially crafted Lua scripts may result with Heap buffer overflow. (Redis 6.2.6)

  • (CVE-2021-32625) An integer overflow bug in Redis version 6.0 or newer can be exploited using the STRALGO LCS command to corrupt the heap and potentially result with remote code execution. This is a result of an incomplete fix by CVE-2021-29477. (Redis 6.2.4)

  • (CVE-2021-29478) An integer overflow bug in Redis 6.2 could be exploited to corrupt the heap and potentially result with remote code execution. The vulnerability involves changing the default set-max-intset-entries configuration value, creating a large set key that consists of integer values and using the COPY command to duplicate it. The integer overflow bug exists in all versions of Redis starting with 2.6, where it could result with a corrupted RDB or DUMP payload, but not exploited through COPY (which did not exist before 6.2). (Redis 6.2.3)

  • (CVE-2021-29477) An integer overflow bug in Redis version 6.0 or newer could be exploited using the STRALGO LCS command to corrupt the heap and potentially result in remote code execution. The integer overflow bug exists in all versions of Redis starting with 6.0. (Redis 6.2.3)

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