Use After Free Affecting redis-8.4 package, versions <8.4.6-r2


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
1.51% (74th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-REDIS84-19829411
  • published16 Sept 2026
  • disclosed5 May 2026

Introduced: 5 May 2026

CVE-2026-23479  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Chainguard redis-8.4 to version 8.4.6-r2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream redis-8.4 package and not the redis-8.4 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1