Descrição
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 threat actors to remove JSON entries from valid signed activities from a third-party actor. This vulnerability is fixed in 4.5.10, 4.4.17, and 4.3.23.
CVSS 6.5EPSS 0.124%Risco 0.66
Ver fonte- Publicação
- 2026-06-24 20:16:32
- Versões afetadas
- <4.5.10,<4.4.17,<4.3.23
- Tipo
- Aplicação web
- Vetor
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L