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
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-gmx5-frv9-9m9f Mattermost has CSRF vulnerability via Calls Widget page
Fixes

Solution

Update Mattermost to versions 11.1.0, 11.0.5, 10.12.3, 10.11.7 or higher. Alternatively, update the Mattermost Calls plugin to version 1.11.0 or higher.


Workaround

No workaround given by the vendor.

References
History

Mon, 29 Dec 2025 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Mattermost mattermost Server
CPEs cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Vendors & Products Mattermost mattermost Server

Fri, 19 Dec 2025 00:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 17 Dec 2025 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Mattermost
Mattermost mattermost
Vendors & Products Mattermost
Mattermost mattermost

Wed, 17 Dec 2025 12:30:00 +0000

Type Values Removed Values Added
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
Title CSRF Allows Call Initiation and Message Delivery
Weaknesses CWE-352
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Mattermost

Published:

Updated: 2025-12-17T15:47:20.828Z

Reserved: 2025-11-17T09:59:16.331Z

Link: CVE-2025-62190

cve-icon Vulnrichment

Updated: 2025-12-17T15:47:04.478Z

cve-icon NVD

Status : Analyzed

Published: 2025-12-17T13:15:58.370

Modified: 2025-12-29T18:51:51.667

Link: CVE-2025-62190

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-17T21:18:42Z

Weaknesses