CVE-2026-82677

medium

Description

A vulnerability was determined in valkey-io valkey 9.1.0. Impacted is the function moduleTimerHandler of the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Patch name: b349fe2821e3998534b1454c1b64a478daf8c6b7. To fix this issue, it is recommended to deploy a patch.

References

https://vuldb.com/vuln/397172/cti

https://vuldb.com/vuln/397172

https://vuldb.com/submit/893959

https://vuldb.com/cve/CVE-2026-82677

https://github.com/valkey-io/valkey/pull/4211

https://github.com/valkey-io/valkey/issues/4200

https://github.com/valkey-io/valkey/commit/b349fe2821e3998534b1454c1b64a478daf8c6b7

https://github.com/valkey-io/valkey/

https://github.com/user-attachments/files/30118801/PoC.zip

Details

Source: Mitre, NVD

Published: 2026-08-31

Updated: 2026-08-31

Risk Information

CVSS v2

Base Score: 3.3

Vector: CVSS2#AV:N/AC:L/Au:M/C:N/I:N/A:P

Severity: Low

CVSS v3

Base Score: 2.4

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L

Severity: Low

CVSS v4

Base Score: 4.8

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00288