CVE-2026-71573 - Vulnerability Details - OpenCVE

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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact Low

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact partial

No data.

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products

References

Link	Providers
https://developer.joomla.org/security-centre/20260802-core-improper-cors-origin-validation.html
https://www.joomla.org/

History

Tue, 18 Aug 2026 20:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 18 Aug 2026 16:30:00 +0000

Type	Values Removed	Values Added
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.
Title		Joomla! Core - [20260802] - Improper CORS origin validation in Joomla 4.0.0-5.4.7, 6.0.0-6.1.2
Weaknesses		CWE-93
References		https://developer.joomla.org/security-centre/20260802-core-improper-cors-origin-validation.html https://www.joomla.org/
Metrics		cvssV4_0 `{'score': 6.9, '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'}`

MITRE

Status: PUBLISHED

Assigner: Joomla

Published: 2026-08-18T16:09:47.440Z

Updated: 2026-08-18T19:30:43.316Z

Reserved: 2026-08-07T13:04:49.114Z

Link: CVE-2026-71573

Vulnrichment

Updated: 2026-08-18T19:03:02.903Z

NVD

Status : Received

Published: 2026-08-18T17:17:02.243

Modified: 2026-08-18T20:17:24.540

Link: CVE-2026-71573

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-08-18T17:45:07Z

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