CVE-2025-27538

Mattermost versions 10.5.x <= 10.5.1, 9.11.x <= 9.11.9 fail to enforce MFA checks in PUT /api/v4/users/user-id/mfa when the requesting user differs from the target user ID, which allows users with edit_other_users permission to activate or deactivate MFA for other users, even if those users have not set up MFA.

Published: Apr 16, 2025
Updated: Aug 11, 2025
CVE: CVE-2025-27538
GHSA: GHSA-j5jw-m2ph-3jjf
Severity: Low
Exploit:

CVSS v3:

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

CWEs:

CWE-306

Affected Software
References

Software	From	Fixed in
github.com/mattermost/mattermost/server/v8	10.5.0	10.5.2
github.com/mattermost/mattermost/server/v8	9.11.0	9.11.10
github.com/mattermost/mattermost/server/v8	-	8.0.0-20250314142426-c049748b8863

https://mattermost.com/security-updates
https://pkg.go.dev/vuln/GO-2025-3620

Vulnerability Database

CVE-2025-27538

Deep Security Visibility Without the Complexity