CVE-2026-71573 PUBLISHED

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

Assigner: Joomla
Reserved: 07.08.2026 Published: 18.08.2026 Updated: 19.08.2026

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.

Metrics

CVSS Vector: 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
CVSS Score: 6.9

Product Status

Vendor Joomla! Project
Product Joomla! CMS
Versions Default: unaffected
  • Version 4.0.0-5.4.6 is affected
  • Version 6.0.0-6.1.2 is affected

Credits

  • Agamemnon Fakas finder
  • caveeroo finder

References

Problem Types

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