What is GHSA-8pff-p3gx-w4jf?

GHSA-8pff-p3gx-w4jf is a security advisory published by GitHub Security Advisories with Medium severity. Mattermost Server vulnerable to XSS via an uploaded file

Which CVE IDs does GHSA-8pff-p3gx-w4jf cover?

GHSA-8pff-p3gx-w4jf covers the following CVE IDs: CVE-2017-18904. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-8pff-p3gx-w4jf?

GHSA-8pff-p3gx-w4jf has a CVSS v3 base score of 6.1, published by GitHub Security Advisories.

Which products are affected by GHSA-8pff-p3gx-w4jf?

GHSA-8pff-p3gx-w4jf affects 2 products, including: go/github.com/mattermost/mattermost-server:\u003c 3.9.2; go/github.com/mattermost/mattermost-server:\u003e= 3.10.0, \u003c 3.10.2.

GHSA-8pff-p3gx-w4jfMediumCVSS 6.1

Mattermost Server vulnerable to XSS via an uploaded file

Vendor

GitHub Security Advisories

Published

May 24, 2022

Last Modified

January 12, 2026

🔗 CVE IDs covered (1)

CVE-2017-18904 →

📋 Description

An issue was discovered in Mattermost Server before 4.0.0, 3.10.2, and 3.9.2. It allows XSS via an uploaded file.

🎯 Affected products2

go/github.com/mattermost/mattermost-server:< 3.9.2
go/github.com/mattermost/mattermost-server:>= 3.10.0, < 3.10.2

🔗 References (6)

https://nvd.nist.gov/vuln/detail/CVE-2017-18904
https://github.com/mattermost/mattermost/commit/6a2754376c8c8270be5e11e3fdab589659d0cc8d
https://github.com/mattermost/mattermost/commit/bde06a7bc3a03a56da224c1ffcd8bffb0af8071b
https://github.com/mattermost/mattermost/commit/f06c5bef4d78966c60b153bbec6eea4ec0be9e68
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-8pff-p3gx-w4jf