CVE-2025-10545 Guest user can add unauthorized team users to private channels

Mattermost versions 10.5.x = 10.5.10, 10.11.x = 10.11.2 fail to properly validate guest user permissions when adding channel members which allows guest users to add any team members to their private channels via the /api/v4/channels/channelid/members endpoint...

EUVD-2025-25413

Malicious code in bioql PyPI...

CVE-2025-49810 Thread summarization allows persistent access to channel

Mattermost versions 10.5.x = 10.5.8 fail to validate access controls at time of access which allows user to read a thread via AI posts...

SUSE CVE-2025-2527

Mattermost versions 10.5.x = 10.5.2, 9.11.x = 9.11.11 failed to properly verify a user's permissions when accessing groups, which allows an attacker to view group information via an API request...