Описание
Mattermost doesn't validate the Host header when constructing response URLs for custom slash command
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to validate the Host header when constructing response URLs for custom slash commands which allows an authenticated attacker to redirect slash command responses to an attacker-controlled server via a spoofed Host header.. Mattermost Advisory ID: MMSA-2026-00582
Пакеты
github.com/mattermost/mattermost/server/v8
>= 11.5.0, < 11.5.2
11.5.2
github.com/mattermost/mattermost/server/v8
>= 10.11.0, < 10.11.14
10.11.14
github.com/mattermost/mattermost/server/v8
< 8.0.0-20260325160634-e738016c5920
8.0.0-20260325160634-e738016c5920
github.com/mattermost/mattermost-server
< 5.3.2-0.20260325160634-e738016c5920
5.3.2-0.20260325160634-e738016c5920
Связанные уязвимости
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to validate the Host header when constructing response URLs for custom slash commands which allows an authenticated attacker to redirect slash command responses to an attacker-controlled server via a spoofed Host header.. Mattermost Advisory ID: MMSA-2026-00582
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to vali ...