What’s Vulnerable › Vulnerabilities

CVE-2026-82677: valkey-io valkey Module Timer module.c moduleTimerHandler double free

• Severity: low (CVSS 2.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-31 · updated 2026-08-31
• Weakness: CWE-119

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.

Affected products

• valkey-io valkey: 9.1.0

References

• https://github.com/user-attachments/files/30118801/PoC.zip
• https://github.com/valkey-io/valkey/
• https://github.com/valkey-io/valkey/commit/b349fe2821e3998534b1454c1b64a478daf8c6b7
• https://github.com/valkey-io/valkey/issues/4200
• https://github.com/valkey-io/valkey/pull/4211
• https://vuldb.com/cve/CVE-2026-82677
• https://vuldb.com/submit/893959
• https://vuldb.com/vuln/397172
• https://vuldb.com/vuln/397172/cti
• https://github.com/valkey-io/valkey/issues/4200
• https://vuldb.com/submit/893959

Get alerted when CVE-2026-82677 or the next vulnerability affects your stack