CyberRota Analysis
This is a low severity vulnerability with a CVSS score of 3.1. See the original NVD description below for full technical details.
CVE
CVE-2026-20796
Severity
LOW
CVSS
3.1
EPSS
0.20%
Original NVD Description
Mattermost versions 10.11.x <= 10.11.9 fail to properly validate channel membership at the time of data retrieval which allows a deactivated user to learn team names they should not have access to via a race condition in the /common_teams API endpoint.. Mattermost Advisory ID: MMSA-2025-00549
Related CVEs
Other vulnerabilities affecting the same vendor(s)