GitHub Advisoryadvisory · Go

GHSA-f7c3-7vp3-44p6 Mattermost Server mishandles redirect denial action

MEDIUM Published 2022-05-24 Modified 2026-01-12 Official page ↗
Aliases
CVE-2017-18897
Ecosystem
Go
Packages
github.com/mattermost/mattermost-server
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Weaknesses
CWE-601
Reviewed
2026-01-12

Affected packages

• Go github.com/mattermost/mattermost-server: < 4.0.5 → fixed in 4.0.5 • Go github.com/mattermost/mattermost-server: >= 4.1.0, < 4.1.1 → fixed in 4.1.1 • Go github.com/mattermost/mattermost-server: >= 4.2.0-rc1, < 4.2.0 → fixed in 4.2.0

Description

An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5, when used as an OAuth 2.0 service provider. It mishandles a deny action for a redirection.

Related

Alias · CVE (1)

  • CVE-2017-18897 An issue was discovered in Mattermost Server before 4.2.0, 4.1.1, and 4.0.5, when used as an OAuth 2.0 service provider. vulnerability

Weakness · CWE (1)

  • CWE-601 URL Redirection to Untrusted Site weakness

References