🛡️ CVE-2025-25306 — misskey

🔴 CVSS 9.3 — Critical ✅ No Known Exploit CWE-346 NVD
9.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity high, availability none.

Weakness class

CVE-2025-25306 is classified as CWE-346: Origin Validation Error. The origin of a message or request is not verified properly, so one source can pose as another.

Affected software

CVE-2025-25306 is recorded against 1 package.

  • misskey (fixed in 2025.2.1)

Timeline and source

Published on 10 March 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

github.com
github.com

Details

Severity CRITICAL
CVSS Score 9.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
CWE CWE-346
Public Exploit ✅ No
Source NVD
Published 2025-03-10
Updated 2026-08-11
Modified 2026-06-17

Affected Packages

Software From version Fixed in
misskey — 2025.2.1

Similar Threats

Exploit Protection

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