CVE-2026-82631 — valkey-io valkey Blocked-on-keys blocked.c handleClientsBlockedOnKey use after free
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-…
Published: 2026-08-31 · CVSS: 2.1 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7