Beschreibung
Mattermost versions 11.5.x <= 11.5.1 fail to verify channel membership when processing AI-assisted message rewrites which allows an authenticated attacker to read the content of threads in private channels and direct messages they do not have access to via a crafted request to the post rewrite endpoint.. Mattermost Advisory ID: MMSA-2026-00645
CVSS 6.5EPSS 0.20500000000000002%Risiko 0.66
Quelle öffnen- Veröffentlicht
- 2026-05-18 09:16:23
- Betroffene Versionen
- <= 11.5.1
- Typ
- Core software
- Vektor
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N