Main Vulnerability Database Vulnerabilities #VU30240

Incorrect default permissions in Mattermost Server - CVE-2019-20889

Published: June 19, 2020 / Updated: July 17, 2020

Vulnerability identifier: #VU30240

CSH Severity: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2019-20889

CWE-ID: CWE-276

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Mattermost Server

Software vendor:
Mattermost, Inc.

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

An issue was discovered in Mattermost Server before 5.7, 5.6.3, 5.5.2, and 4.10.5. It mishandles permissions for user-access token creation.

Install update from vendor's website.