CVE-2026-21631

Joomla! Core - [20260303] - XSS vector in com_associations comparison view

State: Published
Severity: 5.9 Medium
Published: Apr 1, 2026
Updated: Apr 2, 2026
Reserved: Jan 1, 2026

Description

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

Scores

CVSS	Score	Vector	Source
4.0	5.9 Medium	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	Joomla

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
Joomla! CMSJoomla! Project	4.0.0-5.4.3Affected 6.0.0-6.0.3Affected

References

https://developer.joomla.org/security-centre/1029-20260303-core-xss-vector-in-com-associations-comparison-view.htmlvendor-advisory
https://github.com/Shirshaw64p/security-advisories/tree/main/CVE-2026-21631third-party-advisory

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.