CVE-2018-21256

MEDIUM

Mattermost Server < 5.1.0 - Incorrect Permission Assignment

Title source: rule
STIX 2.1

Description

An issue was discovered in Mattermost Server before 5.1. It allows attackers to bypass intended access restrictions (for group-message channel creation) via the Group message slash command.

References (1)

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

Scores

CVSS v3 4.3
EPSS 0.0015
EPSS Percentile 35.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Details

CWE
CWE-732
Status published
Products (1)
mattermost/mattermost_server < 5.1.0
Published Jun 19, 2020
Tracked Since Feb 18, 2026