Home/CVE/Misskey is an open source, federated social media platform. The patch for CVE-2024-52591 did not sufficiently validate t
CVE

CVE-2025-25306

Misskey is an open source, federated social media platform. The patch for CVE-2024-52591 did not sufficiently validate t

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.

CRITICAL · CVSS 9.3 EPSS 0.00077
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-1025Comparison Using Wrong Factors
CWE-346Origin Validation Error
CWE-441Unintended Proxy or Intermediary ('Confused Deputy')
▤

Affected Products & Versions

1
misskey< 2025.2.1
▣

Scoring & Timeline

9.3
CRITICAL · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD10 Mar 2025 · 07:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/misskey-dev/misskey/releases/tag/2025.2.1Patch
https://github.com/misskey-dev/misskey/security/advisories/GHSA-6w2c-vf6f-xf26Third Party Advisory
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