Vulnerability Description
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.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/user-attachments/files/30111628/PoC.zip
- https://github.com/valkey-io/valkey/
- https://github.com/valkey-io/valkey/commit/b2fb0e13f5b4c8c2fb63dcfc2c37a067a0d6d
- https://github.com/valkey-io/valkey/issues/4198
- https://github.com/valkey-io/valkey/pull/4212
- https://vuldb.com/cve/CVE-2026-82631
- https://vuldb.com/submit/893793
- https://vuldb.com/vuln/397129
- https://vuldb.com/vuln/397129/cti
FAQ
What is CVE-2026-82631?
CVE-2026-82631 is a vulnerability with a CVSS score of 2.2 (LOW). 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 ...
How severe is CVE-2026-82631?
CVE-2026-82631 has been rated LOW with a CVSS base score of 2.2/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-82631?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.