by Kastro
Paper/Archive/CVE-2025-25306

CVE-2025-25306

misskey-dev misskey — Misskey's Incomplete Patch of CVE-2024-52591 Leads to Forgery of Federated Notes

EPSS 0.2%CVSS 9.3
critical.is priorityof 100
29
CVSS 9.3 (CNA, NVD agree)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 7.6.076 × 201.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
misskey< 2025.2.1–CNA

Scores by source

GitHub_M (CNA)9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
NVD9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/misskey-dev/misskey/security/advisories/GHSA-6w2c-vf6f-xf26refgithub.com/misskey-dev/misskey/releases/tag/2025.2.1