Описание
Mattermost doesn't filter nil elements from outgoing webhook attachment payloads before processing
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
Пакеты
github.com/mattermost/mattermost-server
= 11.6.0
11.6.1
github.com/mattermost/mattermost-server
>= 11.5.0, < 11.5.4
11.5.4
github.com/mattermost/mattermost-server
>= 11.4.0, < 11.4.5
11.4.5
github.com/mattermost/mattermost-server
>= 10.11.0, < 10.11.15
10.11.15
github.com/mattermost/mattermost/server/v8
< 8.0.0-20260407102538-faa7d75b4ea0
8.0.0-20260407102538-faa7d75b4ea0
Связанные уязвимости
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
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4 ...
Уязвимость приложения для обмена мгновенными сообщениями Mattermost, связанная с недостаточной проверкой необычных или исключительных состояний, позволяющая нарушителю вызвать отказ в обслуживании