Vulnerability · Published Mar 10, 2025 · Assigned by GitHub_M

CVE-2025-25306Misskey's Incomplete Patch of CVE-2024-52591 Leads to Forgery of Federated Notes

Critical 9.3

In plain English

A critical-severity security flaw in misskey from misskey-dev. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 3.1)9.3Critical

Exploit odds (30 days)0.2%top 92.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
misskey-dev	misskey	< 2025.2.1

Weakness: CWE-346, CWE-441, CWE-1025 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

References

https://github.com/misskey-dev/misskey/security/advisories/GHSA-6w2c-vf6f-xf26 x_refsource_CONFIRM
https://github.com/misskey-dev/misskey/releases/tag/2025.2.1 x_refsource_MISC