PT-2026-29503 · Joomla · Joomla! Cms

Published 2026-04-01 · Updated 2026-04-01 · CVE-2026-21631

Mitre

CVSS v4.0

5.9

Medium

AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U

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

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-21631

Affected Products

Joomla! Cms

References · 2

• https://developer.joomla.org/security-centre/1029-20260303-core-xss-vector-in-com-associations-comparison-view.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-21631 · Security Note