What is GHSA-fhqj-97rr-gvhp?

GHSA-fhqj-97rr-gvhp is a security advisory published by GitHub Security Advisories with Medium severity. Mattermost Desktop App versions \u003c=6.1 6.0.1 5.4.13.0 fail to prevent an invalid URL from loading...

Which CVE IDs does GHSA-fhqj-97rr-gvhp cover?

GHSA-fhqj-97rr-gvhp covers the following CVE IDs: CVE-2026-3471. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-fhqj-97rr-gvhp?

GHSA-fhqj-97rr-gvhp has a CVSS v3 base score of 6.5, published by GitHub Security Advisories.

GHSA-fhqj-97rr-gvhpMediumCVSS 6.5

Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent an invalid URL from loading...

Vendor

GitHub Security Advisories

Published

May 18, 2026

Last Modified

May 18, 2026

🔗 CVE IDs covered (1)

CVE-2026-3471 →

📋 Description

Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent an invalid URL from loading in a pop-up window in the Mattermost Desktop App which allows a malicious server owner to repeated crash the application via calling {{window.open('javascript:alert()');}}. Mattermost Advisory ID: MMSA-2026-00618

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-3471
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-fhqj-97rr-gvhp