CVE-2026-23479

HIGH 7.5

redis-server use-after-free in unblock client flow may allow remote code execution

CVSS Score

7.5

EPSS Score

1.3%

EPSS Percentile

67th

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.

CWE	CWE-416
Vendor	redis
Product	redis
Ecosystems	Database Cache
Industries	Technology
Published	May 5, 2026
Last Updated	Jul 16, 2026

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Affected Versions

redis / redis

>= 7.2.0, < 8.6.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗