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.

Published: May 15, 2025
Updated: Jun 30, 2025
CVE: CVE-2025-2527
GHSA: GHSA-h356-3mfw-x368
Severity: Medium
Exploit:

CVSS v3:

Severity: Unknown
Score:
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CWEs:

CWE-863

Affected Software
References

Software	From	Fixed in
github.com/mattermost/mattermost/server/v8	10.5.0	10.5.3
github.com/mattermost/mattermost/server/v8	9.11.0	9.11.12
github.com/mattermost/mattermost/server/v8	-	8.0.0-20250411064244-844447fbd57c

https://mattermost.com/security-updates

Vulnerability Database

289,782

CVE-2025-2527