What is GHSA-h8qw-xqm9-q66j?

GHSA-h8qw-xqm9-q66j is a security advisory published by GitHub Security Advisories with Medium severity. Mattermost Server is vulnerable to XSS through customizable theme color-code values

Which CVE IDs does GHSA-h8qw-xqm9-q66j cover?

GHSA-h8qw-xqm9-q66j covers the following CVE IDs: CVE-2016-11070. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-h8qw-xqm9-q66j?

GHSA-h8qw-xqm9-q66j has a CVSS v3 base score of 5.4, published by GitHub Security Advisories.

Which products are affected by GHSA-h8qw-xqm9-q66j?

GHSA-h8qw-xqm9-q66j affects 1 product, including: go/github.com/mattermost/mattermost-server:\u003c 3.1.0.

GHSA-h8qw-xqm9-q66jMediumCVSS 5.4

Mattermost Server is vulnerable to XSS through customizable theme color-code values

Vendor

GitHub Security Advisories

Published

May 24, 2022

Last Modified

October 22, 2025

🔗 CVE IDs covered (1)

CVE-2016-11070 →

📋 Description

An issue was discovered in Mattermost Server before 3.1.0. It allows XSS via theme color-code values.

🎯 Affected products1

go/github.com/mattermost/mattermost-server:< 3.1.0

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2016-11070
https://github.com/mattermost/mattermost/commit/c5deb333db40e4e527f98edb93b41d1b66cfec5f
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-h8qw-xqm9-q66j