CVE Catalog

CVE-2026-82631

LowCVSS 2.2
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.36%

29th percentile - higher than 29% of all known CVEs

Summary

A security flaw was discovered in valkey-io valkey 9.1.0. The function handleClientsBlockedOnKey in src/blocked.c of the Blocked-on-keys Subsystem is vulnerable to use after free. The attack may be performed remotely but is difficult to exploit due to high complexity. The exploit is public, and a patch is available.

Risk Assessment

Risk of remote code execution or crash, but due to difficulty, the risk is moderate. Nevertheless, an update is recommended.

Recommendation

It is recommended to apply patch b2fb0e13f5b4c8c2fb63dcfc2c37a067a0d6d20b or upgrade to a newer version.

Other vulnerabilities in valkey

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Original NVD description (English source)

A security flaw has been discovered in valkey-io valkey 9.1.0. The affected element is the function handleClientsBlockedOnKey of the file src/blocked.c of the component Blocked-on-keys Subsystem. The manipulation results in use after free. The attack may be performed from remote. A high complexity level is associated with this attack. The exploitability is described as difficult. The exploit has been released to the public and may be used for attacks. The patch is identified as b2fb0e13f5b4c8c2fb63dcfc2c37a067a0d6d20b. Applying a patch is advised to resolve this issue.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS