CVE-2025-25306 – Misskey ActivityPub Object Authority Validation Bypass

The following table lists the changes that have been made to the
CVE-2025-25306 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Mar. 10, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N
    Added CWE CWE-346
    Added CWE CWE-441
    Added CWE CWE-1025
    Added Reference https://github.com/misskey-dev/misskey/releases/tag/2025.2.1
    Added Reference https://github.com/misskey-dev/misskey/security/advisories/GHSA-6w2c-vf6f-xf26
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