CVE-2025-25306

CRITICAL

Misskey < 2025.2.1 - Origin Validation Error

Title source: rule

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.

References (2)

[Patch] https://github.com/misskey-dev/misskey/releases/tag/2025.2.1

[Third Party Advisory] https://github.com/misskey-dev/misskey/security/advisories/GHSA-6w2c-vf6f-xf26

Scores

CVSS v3 9.3

EPSS 0.0005

EPSS Percentile 16.3%

Attack Vector NETWORK

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

Classification

CWE

CWE-441 CWE-346 CWE-1025

Status published

Affected Products (1)

misskey/misskey < 2025.2.1

Timeline

Published Mar 10, 2025

Tracked Since Feb 18, 2026