What is GHSA-mf43-g8vp-9q4m?

GHSA-mf43-g8vp-9q4m is a security advisory published by GitHub Security Advisories with Low severity. Mattermost Desktop App versions \u003c=6.1 6.0.1 5.4.13.0 fail to prevent server-rendered content from...

Which CVE IDs does GHSA-mf43-g8vp-9q4m cover?

GHSA-mf43-g8vp-9q4m covers the following CVE IDs: CVE-2026-4643. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-mf43-g8vp-9q4m?

GHSA-mf43-g8vp-9q4m has a CVSS v3 base score of 3.5, published by GitHub Security Advisories.

GHSA-mf43-g8vp-9q4mLowCVSS 3.5

Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent server-rendered content from...

Vendor

GitHub Security Advisories

Published

May 18, 2026

Last Modified

May 18, 2026

🔗 CVE IDs covered (1)

CVE-2026-4643 →

📋 Description

Mattermost Desktop App versions <=6.1 6.0.1 5.4.13.0 fail to prevent server-rendered content from closing an underlying application view in the Mattermost Desktop App which allows a malicious server or plugin to crash the desktop client via invoking {{window.close()}} in the renderer context, leading to a denial of service condition at the client level. Mattermost Advisory ID: MMSA-2026-00633

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-4643
https://mattermost.com/security-updates
https://github.com/advisories/GHSA-mf43-g8vp-9q4m