CVE-2017-18911

CRITICAL

Mattermost Server <3.8.2-3.6.7 - Info Disclosure

Title source: llm

Description

An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. The X.509 certificate validation can be skipped for a TLS-based e-mail server.

References (1)

[Vendor Advisory] https://mattermost.com/security-updates/

Scores

CVSS v3 9.1

EPSS 0.0014

EPSS Percentile 33.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Classification

CWE

CWE-295

Status published

Affected Products (2)

mattermost/mattermost_server < 3.6.7

mattermost/mattermost-server < 3.6.7-rc1Go

Timeline

Published Jun 19, 2020

Tracked Since Feb 18, 2026