CyberRota Analysis
This is a medium severity vulnerability with a CVSS score of 4.3. Exploitation may require the attacker to be authenticated.
CVE
CVE-2026-3637
Severity
MEDIUM
CVSS
4.3
EPSS
0.15%
Original NVD Description
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13, 11.4.x <= 11.4.3 fail to check the create_post channel permission during post edit operations which allows an authenticated attacker with revoked posting privileges to modify their existing posts via direct API requests to the post update and patch endpoints.. Mattermost Advisory ID: MMSA-2026-00627
Related CVEs
Other vulnerabilities affecting the same vendor(s)