CVE-2019-20887

MEDIUM

Mattermost Server < 4.10.6 - Missing Authorization for Intra-Team Post Access

Title source: llm
STIX 2.1

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.

References (1)

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

Scores

CVSS v3 4.3
EPSS 0.0011
EPSS Percentile 29.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Details

CWE
CWE-862
Status published
Products (1)
mattermost/mattermost_server < 4.10.6
Published Jun 19, 2020
Tracked Since Feb 18, 2026