Описание
Mattermost fails to validate team-specific upload_file permissions
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to validate team-specific upload_file permissions which allows a guest user to post files in channels where they lack upload_file permission via uploading files in a team where they have permission and reusing the file metadata in a POST request to a different team. Mattermost Advisory ID: MMSA-2025-00553
Пакеты
github.com/mattermost/mattermost/server/v8
< 8.0.0-20260107144005-c7f6efdfb035
8.0.0-20260107144005-c7f6efdfb035
github.com/mattermost/mattermost-server
< 5.3.2-0.20260107144005-c7f6efdfb035
5.3.2-0.20260107144005-c7f6efdfb035
github.com/mattermost/mattermost-server
>= 10.11.0-rc1, < 10.11.11
10.11.11
github.com/mattermost/mattermost-server
>= 11.2.0-rc1, < 11.2.3
11.2.3
github.com/mattermost/mattermost-server
>= 11.3.0-rc1, < 11.3.1
11.3.1
Связанные уязвимости
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to validate team-specific upload_file permissions which allows a guest user to post files in channels where they lack upload_file permission via uploading files in a team where they have permission and reusing the file metadata in a POST request to a different team. Mattermost Advisory ID: MMSA-2025-00553
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10. ...