Joomla CMS XSS via unsanitized article titles
CVE-2026-21632 Published on April 1, 2026
Joomla! Core - [20260304] - XSS vectors in various article title outputs
Lack of output escaping for article titles leads to XSS vectors in various locations.
Weakness Type
What is a XSS Vulnerability?
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
CVE-2026-21632 has been classified to as a XSS vulnerability or weakness.
Products Associated with CVE-2026-21632
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Affected Versions
Joomla! Project Joomla! CMS:- Version 4.0.0-5.4.3 is affected.
- Version 6.0.0-6.0.3 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.