PT-2020-8466 · Mattermost · Mattermost Server

Published 2020-06-19 · Updated 2020-06-23 · CVE-2017-18920

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Mattermost Server versions prior to 3.6.2

Description: An issue was discovered where the WebSocket feature does not follow the Same Origin Policy.

Recommendations: For versions prior to 3.6.2, update to version 3.6.2 or later to resolve the issue.

Fix

Related Identifiers

CVE-2017-18920

Affected Products

Mattermost Server

References · 3

• https://mattermost.com/security-updates · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-18920 · Security Note
• https://osv.dev/vulnerability/CVE-2017-18920 · Vendor Advisory