CVE-2025-53971

Mattermost versions 10.5.x = 10.5.8, 9.11.x = 9.11.17 fail to properly validate authorization for team scheme role modifications which allows Team Admins to demote Team Members to Guests via the PUT /api/v4/teams/team-id/members/user-id/schemeRoles API endpoint...

CVE-2025-53971

Mattermost Server vulnerability CVE-2025-53971 affects versions 10.5.x ≤ 10.5.8 and 9.11.x ≤ 9.11.17. The issue arises from improper authorization validation for team scheme role modifications, allowing Team Admins to demote Team Members to Guests via PUT /api/v4/teams/{team-id}/members/{user-id}...

PT-2025-34197 · Mattermost · Mattermost

Name of the Vulnerable Software and Affected Versions: Mattermost versions 10.5.x through 10.5.8 Mattermost versions 9.11.x through 9.11.17 Description: Mattermost fails to properly validate authorization for team scheme role modifications. This allows Team Admins to demote Team Members to Guests...

Mattermost 安全漏洞

Mattermost is an open source collaboration platform from Mattermost, Inc. in the United States. A security vulnerability exists in Mattermost version 9.11.2 and prior versions 9.11.x and version 9.5.10 and prior versions 9.5.x. The vulnerability stems from a failure to protect the MFA code from...

PT-2024-9758 · Mattermost +1 · Mattermost +1

Name of the Vulnerable Software and Affected Versions: Mattermost versions 9.5.x through 9.5.9 Mattermost versions 9.10.x through 9.10.2 Mattermost versions 9.11.x through 9.11.1 Description: The issue is related to the lack of authorization procedure in the Mattermost application, which allows a...

PT-2024-32335 · Mattermost +1 · Mattermost +1

Name of the Vulnerable Software and Affected Versions: Mattermost versions 9.11.x through 9.11.0 Mattermost versions 9.5.x through 9.5.8 Description: The issue arises from the failure to validate that the message of a permalink post is a string, allowing an attacker to send a non-string value as...