CVE-2025-25306

moderate-risk
Published 2025-03-10

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.

Do I need to act?

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0.05% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.3/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Misskey

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
36
/ 100
moderate-risk
Severity 31/34 · Critical
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal