CVE-2025-25306 CRITICAL

CVE-2025-25306: Misskey's Incomplete Patch of CVE-2024-52591 Leads to Forgery of Federated Notes

Vendor Misskey-Dev
Product misskey
Weakness CWE-346 · Origin validation
Published March 10, 2025
Last update March 12, 2025
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Misskey is an open source, federated social media platform. The patch for CVE-2024-52591 did not sufficiently validate the relation between the `id` and `url` fields of ActivityPub objects. An attacker can forge an object where they claim authority in the `url` field even if the specific ActivityPub object type require authority in the `id` field. Version 2025.2.1 addresses the issue.

Key dates

02Disclosure timeline

March 10, 2025 CVE published
March 12, 2025 Record updated