Use After Free Affecting redis package, versions *


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
0.08% (24th percentile)

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  • Snyk IDSNYK-CENTOS9-REDIS-16893952
  • published27 May 2026
  • disclosed5 May 2026

Introduced: 5 May 2026

CVE-2026-23631  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

There is no fixed version for Centos:9 redis.

NVD Description

Note: Versions mentioned in the description apply only to the upstream redis package and not the redis package as distributed by Centos. See How to fix? for Centos:9 relevant fixed versions and status.

Redis is an in-memory data structure store. In all versions of redis-server with Lua scripting, an authenticated attacker can exploit the master-replica synchronization mechanism to trigger a use-after-free on replicas where replica-read-only is disabled or can be disabled, which may lead to remote code execution. A workaround is to prevent users from executing Lua scripts or avoid using replicas where replica-read-only is disabled. This is patched in version 8.6.3.

CVSS Base Scores

version 3.1