CVE-2025-62190 CSRF Allows Call Initiation and Message Delivery

What is CVE-2025-62190?

CVE-2025-62190 is a medium-severity vulnerability in Mattermost Mattermost Server, published on 17 Dec 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Mattermost versions 11.0.x <= 11.0.4, 10.12.x <= 10.12.2, 10.11.x <= 10.11.6 and Mattermost Calls versions <=1.10.0 fail to implement CSRF protection on the Calls widget page which allows an authenticated attacker to initiate calls and inject messages into channels or direct messages via a malicious webpage or crafted link

Weakness: CWE-352

Which versions are affected by CVE-2025-62190?

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

Products include Mattermost Mattermost Server.

How do I fix CVE-2025-62190?

Upgrade github.com/mattermost/mattermost-plugin-calls to 1.10.0 or later.

Is CVE-2025-62190 being exploited?

There is no known exploitation of CVE-2025-62190 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-gmx5-frv9-9m9f, GO-2025-4254.