Description

Mattermost versions 11.0.x <= 11.0.4, 10.12.x <= 10.12.2, 10.11.x <= 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plug-in via sending malformed request.

INFO

Published Date :

2025-12-17T18:14:10.973Z

Last Modified :

2025-12-17T19:29:54.734Z

Source :

Mattermost
AFFECTED PRODUCTS

The following products are affected by CVE-2025-12689 vulnerability.

Vendors Products
Mattermost
  • Mattermost
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-12689.

URL Resource
https://mattermost.com/security-updates cve-icon cve-icon
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