What is GHSA-gv72-vwwm-957f?

GHSA-gv72-vwwm-957f is a security advisory published by GitHub Security Advisories with Medium severity. Joomla! Core - [20260908] - Core - XSS in HTML Mail Templates in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 ...

Which CVE IDs does GHSA-gv72-vwwm-957f cover?

GHSA-gv72-vwwm-957f covers the following CVE IDs: CVE-2026-90918. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-gv72-vwwm-957fMedium

Joomla! Core - [20260908] - Core - XSS in HTML Mail Templates in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 ...

Vendor

GitHub Security Advisories

Published

September 29, 2026

Last Modified

September 29, 2026

🔗 CVE IDs covered (1)

CVE-2026-90918 →

📋 Description

Joomla! Core - [20260908] - Core - XSS in HTML Mail Templates in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - The mail template feature lacks an escaping mechanism, causing XSS vectors in multiple extensions.

🔗 References (4)

https://nvd.nist.gov/vuln/detail/CVE-2026-90918
https://developer.joomla.org/security-centre/1088-20260908-core-xss-in-html-mail-templates.html
https://www.joomla.org
https://github.com/advisories/GHSA-gv72-vwwm-957f