PT-2020-8903 · Mattermost · Mattermost Server

Published 2020-06-19 · Updated 2020-06-25 · CVE-2018-21260

Positive Technologies (AI Summary)

CVSS v2.0

4.0

Medium

Base vector

AV:N/AC:L/Au:S/C:P/I:N/A:N

Name of the Vulnerable Software and Affected Versions Mattermost Server versions prior to 4.8.1 Mattermost Server versions prior to 4.7.4 Mattermost Server versions prior to 4.6.3

Description An issue was discovered in Mattermost Server where WebSocket events were accidentally sent during certain user-management operations, violating user privacy.

Recommendations For versions prior to 4.8.1, update to version 4.8.1 or later. For versions prior to 4.7.4, update to version 4.7.4 or later. For versions prior to 4.6.3, update to version 4.6.3 or later.

Fix

Information Disclosure

Weakness Enumeration

CWE-200

Related Identifiers

CVE-2018-21260

Affected Products

Mattermost Server

References · 4

• https://osv.dev/vulnerability/CVE-2018-21260 · Vendor Advisory
• https://mattermost.com/security-updates · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-21260 · Security Note
• https://t.me/cibsecurity/12892 · Telegram Post