CVE-2026-21632: Joomla! Core - [20260304] - XSS vectors in various article title outputs
Published Apr 1, 2026
·Updated
Lack of output escaping for article titles leads to XSS vectors in various locations.
Affected Software
3 affected components
Joomla Joomla! Core
Joomla Joomla\!>=3.0.0<5.4.4
Joomla Joomla\!>=6.0.0<6.0.4
Event History
Apr 1, 2026
CVE Published
via MITRE·09:03 AM
Data Sourced
via MITRE·09:03 AM
DescriptionWeakness
Data Sourced
via NVD·10:16 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-21632?
CVE-2026-21632 has been rated as a medium severity vulnerability due to its potential to allow XSS attacks.
2
How do I fix CVE-2026-21632?
To mitigate CVE-2026-21632, update Joomla! Core to the latest version where the XSS vulnerability has been patched.
3
What types of attacks can CVE-2026-21632 facilitate?
CVE-2026-21632 can facilitate cross-site scripting (XSS) attacks that can lead to session hijacking or data theft.
4
Which versions of Joomla! are affected by CVE-2026-21632?
CVE-2026-21632 affects specific versions of Joomla! Core prior to the security patch released on March 4, 2026.
5
What is the nature of the vulnerability described in CVE-2026-21632?
CVE-2026-21632 is an XSS vulnerability caused by a lack of output escaping for article titles in various locations.