Vulnerability Database

290,206

Total vulnerabilities in the database

CVE-2017-18920

An issue was discovered in Mattermost Server before 3.6.2. The WebSocket feature does not follow the Same Origin Policy.

  • Published: Jun 19, 2020
  • Updated: Apr 13, 2023
  • CVE: CVE-2017-18920
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/Au:N/C:P/I:P/A:P

No CWE or OWASP classifications available.

Software From Fixed in
mattermost / mattermost_server - 3.6.2