All intelligence
// vulnerability record
cached · NVD via COSMOS syncCVE-2026-46349
MEDIUMpublished 2026-06-24 20:16 UTC · 4 days ago · modified 2026-06-25 16:32 UTC
5.3
CVSS / 10
// description
Mastodon is a free, open-source social network server based on ActivityPub. Prior to 4.5.10, 4.4.17, and 4.3.23, Mastodon's normalization of incoming activities signed with Linked-Data Signatures does not sufficiently protect the activities from a certain class of spoofing, allowing attackers to re-arrange a valid signed JSON-LD activity from a third-party actor to have it processed differently. This vulnerability is fixed in 4.5.10, 4.4.17, and 4.3.23.
// cvss 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
// weaknesses (CWE)
- CWE-347