Use After Free Affecting valkey package, versions *


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.89% (58th percentile)

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  • Snyk IDSNYK-ECHOLATEST-VALKEY-19012666
  • published20 Aug 2026
  • disclosed18 Aug 2026

Introduced: 18 Aug 2026

CVE-2026-56684  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

There is no fixed version for Echo:latest valkey.

NVD Description

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

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.

CVSS Base Scores

version 3.1