CVE-2026-6333
LOW3.5CVSS v3
—CVSS v2
0.03%
EPSS (exploit probability)
CWE-918CWE
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
CVSS v3 vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N
Affected routers (0)
No routers currently mapped to this CVE in our database.