CVE-2026-92231

Joomla! Core - [20260915] - Core - XSS filter bypass in InputFilter via HTML5 entity decode mismatch in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The checkAttribute method normalized an attribute value before testing it against the "javascript:" scheme regex, however without decoding HTML5 entities beforehand, causing an XSS vector.

CVSS v3 6.7 MEDIUM

6.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 5.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://developer.joomla.org/security-centre/1095-20260915-core-xss-filter-bypass-in-inputfilter-via-html5-entity-decode-mismatch.html	Patch Vendor Advisory
https://www.joomla.org/	Product

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:joomla:joomla\!::::::::
	cpe:2.3:a:joomla:joomla\!::::::::

History

06 Oct 2026, 16:41

Type	Values Removed	Values Added
First Time		Joomla joomla\! Joomla
CPE		cpe:2.3:a:joomla:joomla\!::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.7
References	~~() https://developer.joomla.org/security-centre/1095-20260915-core-xss-filter-bypass-in-inputfilter-via-html5-entity-decode-mismatch.html -~~	() https://developer.joomla.org/security-centre/1095-20260915-core-xss-filter-bypass-in-inputfilter-via-html5-entity-decode-mismatch.html - Patch, Vendor Advisory
References	~~() https://www.joomla.org/ -~~	() https://www.joomla.org/ - Product

29 Sep 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-29 17:17

Updated : 2026-10-06 16:41

NVD link : CVE-2026-92231

Mitre link : CVE-2026-92231

CVE.ORG link : CVE-2026-92231

JSON object : View

Products Affected

joomla

joomla\!

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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