CVE-2025-24896 HIGH

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

Vendor Misskey-Dev
Product misskey
Weakness CWE-613 · Insufficient session expiration
Published February 11, 2025
Last update February 12, 2025

CVSS base score

8.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 11, 2025 CVE published
February 12, 2025 Record updated