1. Home
  2. CVE Database
  3. CVE-2026-71573
HIGH · 8.3

CVE-2026-71573

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 requ...

Vulnerability 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.

CVSS Score

8.3

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW

Affected Products

VendorProductVersions
JoomlaJoomla\!>= 4.0.0, < 5.4.8

Related Weaknesses (CWE)

CWE-93

References

FAQ

What is CVE-2026-71573?

CVE-2026-71573 is a vulnerability with a CVSS score of 8.3 (HIGH). 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 requ...

How severe is CVE-2026-71573?

CVE-2026-71573 has been rated HIGH with a CVSS base score of 8.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-71573?

Check the references section above for vendor advisories and patch information. Affected products include: Joomla Joomla\!.