CVE-2017-18886

HIGH

Mattermost Server <4.3.0-4.1.2 - Auth Bypass

Title source: llm
STIX 2.1

Description

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows a bypass of restrictions on use of slash commands.

References (1)

Core 1
Core References
Vendor Advisory x_refsource_confirm
https://mattermost.com/security-updates/

Scores

CVSS v3 8.8
EPSS 0.0034
EPSS Percentile 56.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-732
Status published
Products (3)
mattermost/mattermost-server 0 - 4.1.2Go
mattermost/mattermost_server 4.3.0 rc1 (4 CPE variants)
mattermost/mattermost_server < 4.1.2
Published Jun 19, 2020
Tracked Since Feb 18, 2026