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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-23479
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-23479.html
Vendor advisory: security-advisories@github.com — https://github.com/redis/redis/security/advisories/GHSA-93m2-935m-8rj3
Vendor advisory: security-advisories@github.com — https://github.com/redis/redis/releases/tag/8.6.3
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | affected | |
| debian | bullseye | affected | |
| debian | forky | affected | |
| debian | sid | affected | |
| debian | trixie | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| redis | redis | {"startIncluding":"7.2.0","endExcluding":"8.6.3"} | 8.6.3 |
References
CWEs
CWE-416
Verify integrity in audit chain (admin only). AS-IS.