Descripción
Mattermost versions 10.11.x <= 10.11.18, 11.6.x <= 11.6.3, 11.5.x <= 11.5.6 fail to properly apply markdown image rendering restrictions to AI bot tool result posts, which allows an authenticated attacker to exfiltrate data to an attacker-controlled server via injecting markdown image syntax into tool result content rendered by a victim-s client.. Mattermost Advisory ID: MMSA-2026-00619
CVSS 3.5EPSS 0.194%Riesgo 0.36
Ver fuente- Publicación
- 2026-06-26 15:16:38
- Versiones afectadas
- <= 10.11.18, <= 11.6.3, <= 11.5.6
- Tipo
- Aplicación web
- Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N