Description
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to filter nil elements from outgoing webhook attachment payloads before processing, which allows an authenticated user to cause a denial of service (server process termination) via a crafted webhook callback response containing a null attachment entry.. Mattermost Advisory ID: MMSA-2026-00641
CVSS 6.5EPSS 0.27699999999999997%Risque 0.67
Voir la source- Publication
- 2026-05-25 08:16:24
- Versions concernées
- <= 10.11.14, <= 11.4.4, <= 11.5.3, <= 11.6.0
- Type
- Application web
- Vecteur
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H