Description
Valkey is a distributed key-value database. Prior to 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1, Valkey's tlsProcessPendingData function iterates pending_list while an authenticated client can trigger CLIENT KILL, causing connTLSClose to delete the iterator's cached next node and producing a use-after-free that can crash the server or potentially allow remote code execution when TLS is enabled. This issue is fixed in versions 7.2.14, 8.0.10, 8.1.9, 9.0.5, and 9.1.1.
References8
- github.com/valkey-io/valkey/commit/7cd5bcb7575d750ec2de618db80d…
- github.com/valkey-io/valkey/pull/4234
- github.com/valkey-io/valkey/releases/tag/7.2.14
- github.com/valkey-io/valkey/releases/tag/8.0.10
- github.com/valkey-io/valkey/releases/tag/8.1.9
- github.com/valkey-io/valkey/releases/tag/9.0.5
- github.com/valkey-io/valkey/releases/tag/9.1.1
- github.com/valkey-io/valkey/security/advisories/GHSA-53mc-f3m3-…
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 45 · as of 11 November 2026
- CWE
- CWE-416
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.