CVE-2026-82631

valkey-io valkey Blocked-on-keys blocked.c handleClientsBlockedOnKey use after free

LOW
2.2
CVSS Score
Published: August 31, 2026 at 07:45 AM UTC
Updated: August 31, 2026 at 09:16 PM UTC
1 product affected across 1 vendorValkey

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Severity
LOW2.2
Exploit prediction
EPSS 0.4%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (9)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/397129
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/397129/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-82631
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/893793
Issue TrackingPatch
Source: cverecord
https://github.com/valkey-io/valkey/pull/4212

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

2.2LOWVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-416CWE-119

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