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.
History

Tue, 05 May 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 05 May 2026 17:00:00 +0000

Type Values Removed Values Added
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.
Title redis-server use-after-free in unblock client flow may allow remote code execution
Weaknesses CWE-416
References
Metrics cvssV4_0

{'score': 7.7, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-05T17:13:15.203Z

Reserved: 2026-01-13T15:47:41.627Z

Link: CVE-2026-23479

cve-icon Vulnrichment

Updated: 2026-05-05T17:13:12.197Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-05T17:17:02.577

Modified: 2026-05-05T19:38:32.193

Link: CVE-2026-23479

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-05T19:00:12Z