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CVE-2026-71573

Published: Aug 18, 2026Updated: Sep 3, 2026 Sources: CVE List NVDCWE-93
8.3HIGH
NVD MITRE
EPSS Score
0.2%
Top 83.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:LI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-93

Affected Products

joomla
oss-project·AUaka joomla!, bsq sitestats
joomla\!On-premWeb App
Web & CMS Plugins / cms-core
Joomla! Project
oss-projectaka joomla, joomla framework, joomla! cms
Joomla! CMSOn-premWeb App
Web & CMS Plugins / cms-core

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-71573?We can run the check for you — a free external exposure review, no install. Check my exposure

References

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

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