CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 6.7. Exploitation may require the attacker to be authenticated.
CVE
CVE-2026-6739
Severity
MEDIUM
CVSS
6.7
EPSS
0.26%
Original NVD Description
Mattermost versions 11.6.x <= 11.6.1, 11.5.x <= 11.5.4, 10.11.x <= 10.11.15, 10.11.x <= 10.11.16 fail to require system-level permission when patching protected default system roles, which allows authenticated users with delegated user-management permissions to escalate privileges by altering built-in role permissions via the role patch API.. Mattermost Advisory ID: MMSA-2026-00656
Related CVEs
Other vulnerabilities affecting the same vendor(s)