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.

PUBLISHED Reserved 2026-01-13 | Published 2026-05-05 | Updated 2026-05-06 | Assigner GitHub_M

Problem types

CWE-416: Use After Free

Product status

References

github.com/.../redis/security/advisories/GHSA-93m2-935m-8rj3

github.com/redis/redis/releases/tag/8.6.3

cve.org (CVE-2026-23479)

nvd.nist.gov (CVE-2026-23479)

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