GitHub Advisoryadvisory · Go

GHSA-m497-hq5x-6jcv Mattermost Server allows attackers to create buttons that can launch API requests

MEDIUM Published 2022-05-24 Modified 2025-12-05 Official page ↗
Aliases
CVE-2017-18890
Ecosystem
Go
Packages
github.com/mattermost/mattermost-server
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Weaknesses
CWE-20
Reviewed
2025-12-05

Affected packages

• Go github.com/mattermost/mattermost-server: < 4.1.2 → fixed in 4.1.2 • Go github.com/mattermost/mattermost-server: >= 4.2.0-rc1, < 4.2.1 → fixed in 4.2.1 • Go github.com/mattermost/mattermost-server: >= 4.3.0-rc1, < 4.3.0 → fixed in 4.3.0

Description

An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. It allows an attacker to create a button that, when pressed by a user, launches an API request.

Related

Alias · CVE (1)

  • CVE-2017-18890 An issue was discovered in Mattermost Server before 4.3.0, 4.2.1, and 4.1.2. vulnerability

Weakness · CWE (1)

  • CWE-20 Improper Input Validation weakness

References