CVE-2026-71573

Joomla! Core - [20260802] - Improper CORS origin validation in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2

State: Published
Severity: 6.9 Medium
Published: Aug 18, 2026
Updated: Aug 19, 2026
Reserved: Aug 7, 2026

Description

Joomla! Core - [20260802] - Improper CORS origin validation in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2 - An improper implementation prevented configured CORS origins from being properly validated in CORS requests.

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L	Joomla

Weaknesses

CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')

Affected Products

Product	Versions
Joomla! CMSJoomla! Project	4.0.0-5.4.6Affected 6.0.0-6.1.2Affected

References

https://www.joomla.org/product
https://developer.joomla.org/security-centre/20260802-core-improper-cors-origin-validation.htmlvendor-advisory

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