Lack of output escaping leads to a XSS vector in the multilingual associations component.

According to its self-reported version, the instance of Joomla! running on the remote web server is 3.x prior to 5.4.4, or 6.x prior to 6.0.3. It is, therefore, affected by multiple vulnerabilities.

- An ACL hardening in com_ajax, the ajax component was excluded from the default logged-in-user check in the administrative area.

- An SQL injection in com_content articles webservice endpoint

- An XSS vector in com_associations comparison view

- An XSS vectors in various article title outputs

- An Arbitrary file deletion in com_joomlaupdate

- An Improper access check in webservice endpoints

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
115207	Joomla! 6.x < 6.0.3 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	high
115206	Joomla! 3.x < 5.4.4 Multiple Vulnerabilities	Web App Scanning	Component Vulnerability	Version Based	high

Detections

Analytics

CVE-2026-21631

high

Tenable Plugins

high

high