Redis Software release notes 8.0.20-19 (May 2026)

Certificate-based authentication with LDAP group-based authorization. Amazon Linux 2023 support. API enhancements for Active-Active databases and identifying manually stopped database traffic. New search metrics.

​​Redis Software version 8.0.20 is now available! This release includes API enhancements that warranted a new minor version instead of a maintenance release for version 8.0.18. However, you can upgrade from 8.0.2 through 8.0.18 to 8.0.20 without issue.

Highlights

This version offers:

• Certificate-based authentication with LDAP group-based authorization

• Amazon Linux 2023 support

• API enhancements for Active-Active databases and identifying manually stopped database traffic

• New search metrics

New in this release

New features

Certificate-based authentication with LDAP group-based authorization

Redis Software now enables secure client certificate authentication for LDAP users, combining strong authentication with centralized role-based authorization managed through LDAP.

See Certificate-based authentication for LDAP for details and instructions.

Amazon Linux 2023 support

Redis Software now supports the Amazon Linux 2023 operating system.

Enhancements

• Added a traffic_manually_disabled field to the BDB object to indicate whether database traffic was manually stopped using a stop_traffic REST API request. rladmin status extra all also conditionally displays a TRAFFIC_MANUALLY_DISABLED column if any database's traffic was manually stopped.

• Added a crdt_supported_module_featureset_version_map field to the response for REST API requests to get cluster info. This new field provides aggregated module featureset version information, enabling clients to query which featureset versions are supported by each module across the cluster.

• Exposed new search metrics.

Redis database versions

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 feature sets

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

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

Resolved issues

• RS193164: Fixed an issue where the rladmin cluster join command would incorrectly print a bootstrap error when replacing a node in a cluster that uses a custom cnm_https_port, despite the join operation completing successfully.

• RS192584: Fixed an issue where the installation script failed to skip the DNS port verification check when the --skip-dns-port-verification flag was provided.

• RS178757: Simplified the node_wd log output to include only the relevant IP addresses and shard roles instead of all shard details when there is a mismatch with the primary shard IP address during replication to reduce excessive logging.

• RS192988: Fixed an issue where dmcproxy could experience high CPU utilization when shards reached their maximum client connection limits, which could cause shard migration and failover issues.

• RS192736: Fixed an issue where shards could be left in an invalid role state after brief node failures and recoveries under high CPU load.

• RS192586: Fixed an issue where endpoint configuration operations could fail during cluster upgrades if a primary node failover occurred while an operation was in progress between nodes running different software versions.

• RS192576: Fixed an issue where the rof_partial_rdb_support cluster setting for repl-use-sst-transfer for Redis Flex databases was only applied to existing shards and not correctly applied to newly created shards.

• RS184302: Fixed an issue where creating an Active-Active database could fail when Append-Only File (AOF) persistence was enabled with the appendfsync-always policy.

• RS177923: Fixed an issue that could allow partial diagnostic logs to be read before completion.

• RS187553: Fixed an issue where certain PEM and configuration files were not automatically deleted after the deletion of Active-Active or Replica Of databases or after syncer deactivation, which could lead to false certificate expiration alerts.

• RS170893: Limited cluster_wd metrics exporter exposure to localhost.

Version changes

OpenSSL version

Redis Software version 8.0.16 and later requires OpenSSL 3.3 or later.

Reserved ports

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

Ports reserved as of Redis Software version 8.0.18:

Ports reserved as of Redis Software version 7.22.0:

Ports reserved as of Redis Software version 7.8.2:

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

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.

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:

Known issues

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

Known limitations

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:

• Purge an Active-Active instance.

  Use crdb-cli crdb purge-instance instead.

• Search and export the log.

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 8.0.20-19 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)