CVE-2017-18885

CRITICAL

Mattermost Server <4.3.0-4.1.2 - Privilege Escalation

Title source: llm

Description

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows attackers to gain privileges by accessing unintended API endpoints on a user's behalf.

References (1)

[Vendor Advisory] https://mattermost.com/security-updates/

Scores

CVSS v3 9.8

EPSS 0.0041

EPSS Percentile 60.8%

Attack Vector NETWORK

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

Classification

CWE

CWE-269

Status published

Affected Products (6)

mattermost/mattermost_server < 4.1.2

mattermost/mattermost_server

mattermost/mattermost-server < 4.1.2Go

Timeline

Published Jun 19, 2020

Tracked Since Feb 18, 2026