CVE-2025-25306

9.3 CRITICAL
Published: March 10, 2025 Modified: November 26, 2025

Description

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/misskey-dev/misskey/releases/tag/2025.2.1
Source: security-advisories@github.com
Patch
https://github.com/misskey-dev/misskey/security/advisories/GHSA-6w2c-vf6f-xf26
Source: security-advisories@github.com
Third Party Advisory

2 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.3 / 10.0
EPSS (Exploit Probability)
0.0%
15th percentile
Exploitation Status
Not in CISA KEV

Affected Vendors

misskey