Vulnerability Database

299,759

Total vulnerabilities in the database

CVE-2017-18907

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2. XSS could occur via a channel header.

  • Published: Jun 19, 2020
  • Updated: Nov 9, 2025
  • CVE: CVE-2017-18907
  • Severity: Medium
  • Exploit:

CVSS v3:

  • Severity: Medium
  • Score: 6.1
  • AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v2:

  • Severity: Low
  • Score: 4.3
  • AV:N/AC:M/Au:N/C:N/I:P/A:N

CWEs:

OWASP TOP 10:

Software From Fixed in
mattermost / mattermost_server - 3.9.2
mattermost / mattermost_server 3.10.0 3.10.2