CVE-2025-3446: Mattermost Fails to Validate Team Invite Permissions

May 15, 2025 (updated May 17, 2025)

Mattermost versions 10.6.x <= 10.6.1, 10.5.x <= 10.5.2, 10.4.x <= 10.4.4, 9.11.x <= 9.11.11 fail to check the correct permissions which allows authenticated users who only have permission to invite non-guest users to a team to add guest users to that team via the API to add a single user to a team.

References

github.com/advisories/GHSA-r7r2-m3vr-c8qc
github.com/mattermost/mattermost
mattermost.com/security-updates
nvd.nist.gov/vuln/detail/CVE-2025-3446

Code Behaviors & Features

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