CVE-2026-21631
Description
Lack of output escaping leads to a XSS vector in the multilingual associations component.
CWE
- CWE-79 — CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected
- Joomla! Project / Joomla! CMS — v=4.0.0-5.4.3 [affected]; v=6.0.0-6.0.3 [affected]
CVSS
- 4.0 score=5.9 severity=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
References
- https://developer.joomla.org/security-centre/1029-20260303-core-xss-vector-in-com-associations-comparison-view.html vendor-advisory
- https://github.com/Shirshaw64p/security-advisories/tree/main/CVE-2026-21631 third-party-advisory
Source
cvelistV5-main/cves/2026/21xxx/CVE-2026-21631.json