CyberRota Analysis
This is a low severity vulnerability with a CVSS score of 3.5. Exploitation may require the attacker to be authenticated.
CVE
CVE-2026-6333
Severity
LOW
CVSS
3.5
EPSS
0.14%
Original NVD Description
Mattermost versions 11.5.x <= 11.5.1, 10.11.x <= 10.11.13 fail to validate the Host header when constructing response URLs for custom slash commands which allows an authenticated attacker to redirect slash command responses to an attacker-controlled server via a spoofed Host header.. Mattermost Advisory ID: MMSA-2026-00582
Related CVEs
Other vulnerabilities affecting the same vendor(s)