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.
History

Tue, 06 Oct 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Joomla joomla\!
CPEs cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*
Vendors & Products Joomla joomla\!
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


Wed, 30 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Joomla
Joomla joomla!
Vendors & Products Joomla
Joomla joomla!

Wed, 30 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 29 Sep 2026 16:45:00 +0000

Type Values Removed Values Added
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.
Title Joomla! Core - [20260908] - Core - XSS in HTML Mail Templates in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Joomla

Published: 2026-09-29T16:38:58.983Z

Updated: 2026-09-30T16:05:58.927Z

Reserved: 2026-09-14T11:03:59.813Z

Link: CVE-2026-90918

cve-icon Vulnrichment

Updated: 2026-09-30T15:26:24.582Z

cve-icon NVD

Status : Analyzed

Published: 2026-09-29T17:17:13.890

Modified: 2026-10-06T16:35:27.190

Link: CVE-2026-90918

cve-icon Redhat

No data.