CVE-2026-82677
published 2026-08-31CVE-2026-82677: 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…
PriorityP413low2.4CVSS 3.1
AVNACLPRHUIRSUCNINAL
EPSS
0.52%
43.0th percentile
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
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| rhel10 | valkey-8 | — | — |
| rhel9 | valkey-8 | — | — |
| valkey-io | valkey | — | — |
| valkey-io | valkey | — | — |
CVSS provenance
nvdv3.12.4LOWCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L
nvdv4.01.9LOWCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
nvdv2.03.3LOWAV:N/AC:L/Au:M/C:N/I:N/A:P
vendor_redhat2.4LOW
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Red Hat
valkey: Valkey: Denial of Service via double free in Module Timer subsystem
vendor_redhat·2026-08-31·CVSS 2.4
CVE-2026-82677 [LOW] CWE-1341 valkey: Valkey: Denial of Service via double free in Module Timer subsystem
valkey: Valkey: Denial of Service via double free in Module Timer subsystem
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.
A flaw was found in valkey-io valkey. A remote attacker could exploit a double free vulnerability in the `moduleTimerHandler` function within the Module Timer subsystem (src/module.c). This flaw could lead to a denial of service.
Statement: A double-free vulnerability in the Module Timer subsystem (module
GHSA
A vulnerability was determined in valkey-io valkey 9.1.0.
ghsa_unreviewed·2026-08-31
CVE-2026-82677 [LOW] CWE-119 A vulnerability was determined in valkey-io valkey 9.1.0.
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.
VulDB
valkey-io valkey 9.1.0 Module Timer Subsystem src/module.c moduleTimerHandler double free (Issue 4200)
vuldb·2026-08-30
CVE-2026-82677 [LOW] valkey-io valkey 9.1.0 Module Timer Subsystem src/module.c moduleTimerHandler double free (Issue 4200)
A vulnerability was found in valkey-io valkey 9.1.0. It has been classified as problematic. Impacted is the function moduleTimerHandler of the file src/module.c of the component Module Timer Subsystem. This manipulation causes double free.
This vulnerability is handled as CVE-2026-82677. The attack can be initiated remotely. Additionally, an exploit exists.
To fix this issue, it is recommended to deploy a patch.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-82677 valkey: Valkey: Denial of Service via double free in Module Timer subsystem [fedora-all]
bugzilla·2026-09-15·CVSS 2.4
CVE-2026-82677 [LOW] CVE-2026-82677 valkey: Valkey: Denial of Service via double free in Module Timer subsystem [fedora-all]
CVE-2026-82677 valkey: Valkey: Denial of Service via double free in Module Timer subsystem [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Bugzilla
CVE-2026-82677 valkey: Valkey: Denial of Service via double free in Module Timer subsystem [epel-all]
bugzilla·2026-09-15·CVSS 2.4
CVE-2026-82677 [LOW] CVE-2026-82677 valkey: Valkey: Denial of Service via double free in Module Timer subsystem [epel-all]
CVE-2026-82677 valkey: Valkey: Denial of Service via double free in Module Timer subsystem [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Bugzilla
CVE-2026-82677 valkey: Valkey: Denial of Service via double free in Module Timer subsystem
bugzilla·2026-08-31·CVSS 2.4
CVE-2026-82677 [LOW] CVE-2026-82677 valkey: Valkey: Denial of Service via double free in Module Timer subsystem
CVE-2026-82677 valkey: Valkey: Denial of Service via double free in Module Timer subsystem
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.
https://github.com/user-attachments/files/30118801/PoC.ziphttps://github.com/valkey-io/valkey/https://github.com/valkey-io/valkey/commit/b349fe2821e3998534b1454c1b64a478daf8c6b7https://github.com/valkey-io/valkey/issues/4200https://github.com/valkey-io/valkey/pull/4211https://vuldb.com/cve/CVE-2026-82677https://vuldb.com/submit/893959https://vuldb.com/vuln/397172https://vuldb.com/vuln/397172/ctihttps://github.com/valkey-io/valkey/issues/4200https://vuldb.com/submit/893959
2026-08-31
Published