CVE-2016-11077 Mattermost Server allows System Admin to modify LDAP account names and email addresses

What is CVE-2016-11077?

CVE-2016-11077 is a low-severity missing authorization vulnerability in Mattermost Mattermost Server, published on 19 Jun 2020. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

An issue was discovered in Mattermost Server before 3.0.0. It has a superfluous API in which the System Admin can change the account name and e-mail address of an LDAP account.

Weakness: CWE-732

Which versions are affected by CVE-2016-11077?

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

Products include Mattermost Mattermost Server.

How do I fix CVE-2016-11077?

Upgrade github.com/mattermost/mattermost-server to a fixed version for your release line: 3.0.0 or 3.0.0+incompatible.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2016-11077 being exploited?

There is no known exploitation of CVE-2016-11077 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-mj8v-773w-5qhj, GO-2025-4060.