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CVE-2025-24896— Misskey allows token to remain valid in cookie after signing out

Quick assessment

Affected
misskey-dev misskey
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Misskey是Misskey开源的一个永久免费的开源联合社交媒体平台。 Misskey 12.109.0版本至2025.2.0-alpha.0之前版本存在代码问题漏洞，该漏洞源于用于身份验证的登录令牌即使在注销后也不会被删除。

CVSS 8.1 · High EPSS 0.60% · P47

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2025-24896

Vulnerability Information
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Vulnerability Title
Misskey allows token to remain valid in cookie after signing out
Source: CVE Program / CVE List V5
Vulnerability Description
Misskey is an open source, federated social media platform. Starting in version 12.109.0 and prior to version 2025.2.0-alpha.0, a login token named `token` is stored in a cookie for authentication purposes in Bull Dashboard, but this remains undeleted even after logout is performed. The primary affected users will be users who have logged into Misskey using a public PC or someone else's device, but it's possible that users who have logged out of Misskey before lending their PC to someone else could also be affected. Version 2025.2.0-alpha.0 contains a fix for this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
不充分的会话过期机制
Source: CVE Program / CVE List V5
Vulnerability Title
Misskey 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Misskey是Misskey开源的一个永久免费的开源联合社交媒体平台。 Misskey 12.109.0版本至2025.2.0-alpha.0之前版本存在代码问题漏洞，该漏洞源于用于身份验证的登录令牌即使在注销后也不会被删除。
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
misskey-dev misskey >= 12.109.0, < 2025.2.0-alpha.0 -

II. Public POCs for CVE-2025-24896

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6703 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2025-24896

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Patches & Fixes for CVE-2025-24896 (1)

Vendor Advisories for CVE-2025-24896 (1)

IV. Related Vulnerabilities

Same product: misskey
Same vendor: misskey-dev
Same weakness: CWE-613

V. Comments for CVE-2025-24896

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