Описание
Mattermost doesn't validate the X-Requested-With header on the burn-on-read reveal endpoint
Mattermost versions 11.5.x <= 11.5.1, 11.4.x <= 11.4.3 fail to validate the X-Requested-With header on the burn-on-read reveal endpoint which allows an authenticated channel member to force the reveal of a burn-on-read message without recipient consent via a crafted Markdown image tag.. Mattermost Advisory ID: MMSA-2026-00636
Пакеты
github.com/mattermost/mattermost/server/v8
>= 11.5.0, < 11.5.2
11.5.2
github.com/mattermost/mattermost/server/v8
>= 11.4.0, < 11.4.4
11.4.4
github.com/mattermost/mattermost/server/v8
< 8.0.0-20260327001745-7a339a6438f5
8.0.0-20260327001745-7a339a6438f5
github.com/mattermost/mattermost-server
< 5.3.2-0.20260327001745-7a339a6438f5
5.3.2-0.20260327001745-7a339a6438f5
Связанные уязвимости
Mattermost versions 11.5.x <= 11.5.1, 11.4.x <= 11.4.3 fail to validate the X-Requested-With header on the burn-on-read reveal endpoint which allows an authenticated channel member to force the reveal of a burn-on-read message without recipient consent via a crafted Markdown image tag.. Mattermost Advisory ID: MMSA-2026-00636
Mattermost versions 11.5.x <= 11.5.1, 11.4.x <= 11.4.3 fail to validat ...