CVE-2026-23631

Description

Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-after-free on replicas where replica-read-only is disabled or can be disabled, which may lead to remote code execution. A workaround is to prevent users from executing Lua scripts or avoid using replicas where replica-read-only is disabled. This is patched in version 8.6.3.

References

• https://github.com/redis/redis/releases/tag/8.6.3
• https://github.com/redis/redis/security/advisories/GHSA-8ghh-qpmp-7826