Mattermost Fails to Verify User's Permissions When Accessing Groups

GHSA-h356-3mfw-x368 · CVE-2025-2527 · GO-2025-3691

Published May 15, 2025 · Modified May 23, 2025

Description

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.

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2025-2527
PACKAGE https://github.com/mattermost/mattermost
WEB https://mattermost.com/security-updates

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