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-2026-4646
Severity
MEDIUM
CVSS
4.3
EPSS
0.25%
Original NVD Description
Mattermost versions 11.6.x <= 11.6.0, 11.5.x <= 11.5.3, 11.4.x <= 11.4.4, 10.11.x <= 10.11.14 fail to validate user-supplied input in API request handlers which allows an authenticated attacker to crash the plugin process via a crafted HTTP request to the PR details endpoint.. Mattermost Advisory ID: MMSA-2026-00638
Related CVEs
Other vulnerabilities affecting the same vendor(s)