CVE-2025-4573 LDAP Injection in Mattermost Enterprise Edition When Using Active Directory

What is CVE-2025-4573?

CVE-2025-4573 is a medium-severity vulnerability in Mattermost Mattermost Server, published on 11 Jun 2025. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Mattermost versions 10.7.x <= 10.7.1, 10.6.x <= 10.6.3, 10.5.x <= 10.5.4, 9.11.x <= 9.11.13 fail to properly validate LDAP group ID attributes, allowing an authenticated administrator with PermissionSysconsoleWriteUserManagementGroups permission to execute LDAP search filter injection via the PUT /api/v4/ldap/groups/{remote_id}/link API when objectGUID is configured as the Group ID Attribute.

Weakness: CWE-90

Which versions are affected by CVE-2025-4573?

14 open source packages ship an affected version, including github.com/mattermost/mattermost-server, github.com/mattermost/mattermost-server/v5 and github.com/mattermost/mattermost-server/v6. It affects 1 product.

Products include Mattermost Mattermost Server.

How do I fix CVE-2025-4573?

Upgrade github.com/mattermost/mattermost-server to a fixed version for your release line: 10.5.5, 10.6.4, 10.7.2 or 9.11.14.

Is CVE-2025-4573 being exploited?

There is no known exploitation of CVE-2025-4573 in the wild and no public exploit code.

Other vulnerabilities in Mattermost Mattermost Server

• CVE-2025-12419 Account takeover on OAuth/OpenID-enabled servers Critical 9.9
• CVE-2025-12421 Account Takeover via Code Exchange Endpoint Critical 9.9
• CVE-2025-4981 Path Traversal Leading to RCE by Any Authenticated Mattermost User Critical 9.9
• CVE-2025-20051 Arbitrary file read via block duplication in Mattermost Boards Critical 9.9
• CVE-2025-25279 Arbitrary file read in Mattermost Boards via import & export board archive Critical 9.9

All Mattermost Mattermost Server vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-4r67-4x4p-fprg, GO-2025-3756.