CVE-2019-20887

Published: Jun 19, 2020Modified: Jun 17, 2026

4.3

Vector

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

Exploitability: 2.8 / Impact: 1.4

Source: NVD

Description

An issue was discovered in Mattermost Server before 5.7.1, 5.6.4, 5.5.3, and 4.10.6. It does not honor flags API permissions when deciding whether a user can receive intra-team posts.

Affected (4)

Products: Mattermost: Mattermost Server

Mattermost

1 product

Mattermost Server

Configuration A

4 vulnerable

Vulnerable Software	Affected Versions
Mattermost Mattermost Server	Before 4.10.6
Mattermost Mattermost Server	From 5.5.0 to 5.5.3
Mattermost Mattermost Server	From 5.6.0 to 5.6.4
Mattermost Mattermost Server	From 5.7.0 to 5.7.1

Related CWEs

CWE-862

Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

References (2)

https://mattermost.com/security-updates/

Source: cve@mitre.org

Vendor Advisory

https://mattermost.com/security-updates/

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.