CVE-2026-23479

Description

Redis is an in-memory data structure store. In redis-server from 7.2.0 until 8.6.3, the unblock client flow does not handle an error return from `processCommandAndResetClient` when re-executing a blocked command. If a blocked client is evicted during this flow, an authenticated attacker can trigger a use-after-free that may lead to remote code execution. This has been patched in version 8.6.3.

CVSS Vector

Affected Products

References

• https://github.com/redis/redis/releases/tag/8.6.3
• https://github.com/redis/redis/security/advisories/GHSA-93m2-935m-8rj3