What is GHSA-cffj-7w5c-jqjh?

GHSA-cffj-7w5c-jqjh is a security advisory published by GitHub Security Advisories with Medium severity. Mattermost Server vulnerable to Cross-site Scripting through file preview feature

Which CVE IDs does GHSA-cffj-7w5c-jqjh cover?

GHSA-cffj-7w5c-jqjh covers the following CVE IDs: CVE-2016-11063. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-cffj-7w5c-jqjh?

GHSA-cffj-7w5c-jqjh has a CVSS v3 base score of 6.1, published by GitHub Security Advisories.

Which products are affected by GHSA-cffj-7w5c-jqjh?

GHSA-cffj-7w5c-jqjh affects 1 product, including: go/github.com/mattermost/mattermost-server:\u003c 3.5.1.

GHSA-cffj-7w5c-jqjhMediumCVSS 6.1

Mattermost Server vulnerable to Cross-site Scripting through file preview feature

Vendor

GitHub Security Advisories

Published

May 24, 2022

Last Modified

October 21, 2025

🔗 CVE IDs covered (1)

CVE-2016-11063 →

📋 Description

An issue was discovered in Mattermost Server before 3.5.1. XSS can occur via file preview.

🎯 Affected products1

go/github.com/mattermost/mattermost-server:< 3.5.1

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2016-11063
https://github.com/mattermost/mattermost/commit/48533aa483879a19fdd2c1e09c596aa6c028d439
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-cffj-7w5c-jqjh