Description
Misskey is an open source, decentralized microblogging platform. Misskey doesn't perform proper normalization on the JSON structures of incoming signed ActivityPub activity objects before processing them, allowing threat actors to spoof the contents of signed activities and impersonate the authors of the original activities. This vulnerability is fixed in 2024.5.0.
References
https://github.com/misskey-dev/misskey/security/advisories/GHSA-2vxv-pv3m-3wvj
ExploitVendor Advisory
https://github.com/misskey-dev/misskey/security/advisories/GHSA-2vxv-pv3m-3wvj
ExploitVendor Advisory
CVSS impact metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
8.2 · High
Information
Source identifier
Vulnerability status
Analyzed
Published
2024-06-03T14:15:08.567Z
1 year agoLast modified
2025-11-25T19:37:04.547Z
3 months ago