What is GHSA-5ghq-28r7-qwfj?

GHSA-5ghq-28r7-qwfj is a security advisory published by GitHub Security Advisories with Medium severity. Mattermost Server does not restrict SAML certificate path for System Administrators

Which CVE IDs does GHSA-5ghq-28r7-qwfj cover?

GHSA-5ghq-28r7-qwfj covers the following CVE IDs: CVE-2017-18918. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-5ghq-28r7-qwfj?

GHSA-5ghq-28r7-qwfj has a CVSS v3 base score of 4.9, published by GitHub Security Advisories.

Which products are affected by GHSA-5ghq-28r7-qwfj?

GHSA-5ghq-28r7-qwfj affects 2 products, including: go/github.com/mattermost/mattermost-server:\u003c 3.6.5; go/github.com/mattermost/mattermost-server:\u003e= 3.7.0, \u003c 3.7.3.

GHSA-5ghq-28r7-qwfjMediumCVSS 4.9

Mattermost Server does not restrict SAML certificate path for System Administrators

Vendor

GitHub Security Advisories

Published

May 24, 2022

Last Modified

February 6, 2026

🔗 CVE IDs covered (1)

CVE-2017-18918 →

📋 Description

An issue was discovered in Mattermost Server before 3.7.3 and 3.6.5. A System Administrator can place a SAML certificate at an arbitrary pathname.

🎯 Affected products2

go/github.com/mattermost/mattermost-server:< 3.6.5
go/github.com/mattermost/mattermost-server:>= 3.7.0, < 3.7.3

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2017-18918
https://github.com/mattermost/mattermost/commit/8ec37570742b67fd640bb3434ea226c655dbf408
https://github.com/mattermost/mattermost/commit/a12e7fdca439948ab097431d68e8f59778fbab81
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-5ghq-28r7-qwfj