Description

Mattermost Plugins versions <=11.4 11.0.4 11.1.3 11.3.2 10.11.11.0 fail to validate incoming request size which allows an authenticated attacker to cause service disruption via the webhook endpoint. Mattermost Advisory ID: MMSA-2026-00589

INFO

Published Date :

2026-03-26T16:19:32.607Z

Last Modified :

2026-03-26T17:51:14.971Z

Source :

Mattermost
AFFECTED PRODUCTS

The following products are affected by CVE-2026-3116 vulnerability.

Vendors Products
Mattermost
  • Mattermost
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-3116.

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