Vulnerability in Joomla! Project Joomla! CMS

[ Description ]Official 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.

[ Fixes ]Fixes and patches

• Patch on developer.joomla.orgVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ Advisories ]Government CERT advisories

• BSI CERT-Bund29 Sep 2026WID-SEC-2026-3636

  Joomla: Multiple vulnerabilities Translated from German

  CVE-2026-92227CVE-2026-90914CVE-2026-90913+13 more CVEs

[ References ]References

• developer.joomla.org/security-centre/1088-20260908-core-xss-in-html-mail-templates.htmlPatchVendor Advisory
• www.joomla.orgProduct