CVE-2026-23479: redis-server use-after-free in unblock client flow may allow remote code execution
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.
Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H · CWE-416
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
Red Hat: Red Hat Enterprise Linux 10Red Hat: Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat: Red Hat Enterprise Linux 8Red Hat: Red Hat Enterprise Linux 9Red Hat: Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat: Red Hat Hardened Imagesredis: redis
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/redis/redis/releases/tag/8.6.3 (opens in new tab)
- github.com/redis/redis/security/advisories/GHSA-93m2-935m-8rj3 (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)