Description

Mattermost versions 10.11.x <= 10.11.6 and Mattermost GitHub plugin versions <=2.4.0 fail to validate plugin bot identity in reaction forwarding which allows attackers to hijack the GitHub reaction feature to make users add reactions to arbitrary GitHub objects via crafted notification posts.

INFO

Published Date :

2025-12-17T12:11:25.563Z

Last Modified :

2025-12-17T16:48:08.118Z

Source :

Mattermost
AFFECTED PRODUCTS

The following products are affected by CVE-2025-13352 vulnerability.

Vendors Products
Mattermost
  • Mattermost
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-13352.

URL Resource
https://mattermost.com/security-updates cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact