CVE-2026-21632

Joomla! Core - [20260304] - XSS vectors in various article title outputs

Published Apr 1, 2026 CVSS 4.0 · 5.9 Medium EPSS < 1% KEV · Not listed
Description
Lack of output escaping for article titles leads to XSS vectors in various locations.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Joomla joomla\!
CPEs cpe:2.3:a:joomla:joomla\!:*:*:*:*:*:*:*:*
Vendors & Products Joomla joomla\!
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

Type Values Removed Values Added
First Time appeared Joomla
Joomla joomla!
Vendors & Products Joomla
Joomla joomla!
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Lack of output escaping for article titles leads to XSS vectors in various locations.
Title Joomla! Core - [20260304] - XSS vectors in various article title outputs
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 5.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Joomla
Published
Updated
Apr 2, 2026, 5:09 AM
Reserved
Jan 1, 2026, 4:42 AM
Status
Analyzed
Published
Apr 1, 2026, 10:16 AM
Modified
Oct 26, 2026, 9:10 PM