36 matches found
Improper Authorization
github.com/mattermost/mattermost-server is vulnerable to Improper Authorization. The vulnerability is due to insufficient validation of authorization for team scheme role modifications, which allows an attacker Team Admins to demote Team Members to Guests via the affected API endpoint...
Mattermost Server 9.11.x < 9.11.18 / 10.5.x < 10.5.9 / 10.10.0 Incorrect Authorization (MMSA-2025-00485)
The version of Mattermost Server installed on the remote host is affected by a vulnerability as referenced in the MMSA-2025-00485 advisory. - 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 t...
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...
Mattermost Fails to Properly Validate Team Role Modification
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...
GHSA-4276-CM8C-788H Mattermost Fails to Properly Validate Team Role Modification
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 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}...
CVE-2025-53971 Channel and Team Membership APIs inadvertently allow loss of Member privileges.
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 Channel and Team Membership APIs inadvertently allow loss of Member privileges.
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-2024-43876
In the Linux kernel, the following vulnerability has been resolved: PCI: rcar: Demote WARN to devwarnratelimited in rcarpciewakeup Avoid large backtrace, it is sufficient to warn the user that there has been a link problem. Either the link has failed and the system is in need of maintenance, or t...
Snipe-IT Security Breach
Snipe-IT is an open source IT asset/license management system. A security vulnerability exists in Snipe-IT versions v4.6.17 through v6.4.1, which stems from an API call that allows users to make changes to group membership to promote or demote themselves or other users...
CVE-2024-4198
Mattermost versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes which allows an attacker authenticated as team admin to demote users to guest via crafted HTTP requests...
CVE-2024-4198
Mattermost server vulnerability CVE-2024-4198: Versions 9.6.0, 9.5.x before 9.5.3, and 8.1.x before 8.1.12 fail to fully validate role changes. This allows an attacker authenticated as a team admin to demote users to guest via crafted HTTP requests. Root cause is incomplete validation of role cha...
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 that stems from the presence of an issue where a team administrator can demote a user to guest via an HTTP request. The vulnerability affects the following...
CVE-2023-5194
Mattermost contains an Incorrect Authorization vulnerability (CVE-2023-5194) where permissions are not properly validated when demoting and deactivating a user. This lets a system/user manager demote or deactivate another manager. Affected versions include Mattermost Server prior to 7.8.10 and 8....
