CVE-2026-92232

Medium

Description

Joomla! Core - [20260916] - Core - XSS filter bypass in InputFilter via whitespace characters in HTML data URIs in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The cleanAttribute method removes HTML data URIs, however injected whitespaces characters could circumvent that cleanup, causing an XSS vector.

SeverityMedium

CVSS6.5

Exploit probability—

Product

Joomla\!

PublishedSep 29, 2026

First seenSep 29, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

joomla joomla\!5.4.8, 6.1.3 or later

Vendor advisories

developer.joomla.org/security-centre/1096-20260916-core-xss-filter-bypass-in-inputfilter-via-whitespace-characters-in-html-data-uris.html

Affected products

Product	Affected versions	Fixed in
joomla joomla\!	1.5.0 ≤ v < 5.4.8, 6.0.0 ≤ v < 6.1.3	5.4.8, 6.1.3

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