GHSA-58W6-W55X-6WQ8 Mattermost fails to validate user permissions in Boards

Mattermost versions 10.11.x = 10.11.4, 10.5.x = 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does...

Mattermost fails to validate user permissions in Boards

Mattermost versions 10.11.x = 10.11.4, 10.5.x = 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does...

Privilege Context Switching Error

Overview Affected versions of this package are vulnerable to Privilege Context Switching Error in the current user session. An attacker can gain unauthorized access to files and subscribe to blocks belonging to other users by sending crafted requests as an authenticated user. Remediation Upgrade...

CVE-2025-13870 Unauthorized access and subscription vulnerability in Boards

Mattermost versions 10.11.x = 10.11.4, 10.5.x = 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does...

PT-2025-48657

Mattermost versions 10.11.x = 10.11.4, 10.5.x = 10.5.12 fail to validate the user permission when accessing the files and subscribing to the block in Boards, which allows an authenticated user to access other board files and was able to subscribe to the block from other boards that the user does...