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

Quick assessment

Affected
valkey-io valkey
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Valkey是Valkey组织开源的一个灵活的分布式键值数据库。 Valkey 9.1.0版本存在安全漏洞，该漏洞源于Module Timer Subsystem组件中src/module.c文件的moduleTimerHandler函数存在双重释放问题，攻击者可远程发起攻击。

CVSS 2.4 · Low EPSS 0.29% · P21

Affected Version Matrix 1

VendorProduct Version RangeStatus
valkey-io valkey 9.1.0 affected
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I. Basic Information for CVE-2026-82677

Vulnerability Information
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Vulnerability Title
valkey-io valkey Module Timer module.c moduleTimerHandler double free
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
双重释放
Source: CVE Program / CVE List V5
Vulnerability Title
Valkey 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Valkey是Valkey组织开源的一个灵活的分布式键值数据库。 Valkey 9.1.0版本存在安全漏洞，该漏洞源于Module Timer Subsystem组件中src/module.c文件的moduleTimerHandler函数存在双重释放问题，攻击者可远程发起攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
valkey-io valkey 9.1.0 cpe:2.3:a:valkey-io:valkey:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-82677

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III. Intelligence Information for CVE-2026-82677

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Patches & Fixes for CVE-2026-82677 (2)

Other References for CVE-2026-82677 (5)

Other References for CVE-2026-82677 (1)

IV. Related Vulnerabilities

Same product: valkey
Same vendor: valkey-io
Same weakness: CWE-415