Improper Access Control in Joomla! Core Affects Webservice Endpoints
CVE-2026-72531

5.1MEDIUM

Key Information:

Vendor

Joomla
Status
Joomla! Cms
Vendor
CVE Published:
18 August 2026

What is CVE-2026-72531?

An improper access control vulnerability in Joomla! Core affects the handling of custom fields webservice endpoints. This flaw enables unauthorized users to create custom fields for components that should otherwise be restricted. Versions 4.0.0 to 4.5.7 and 6.0.0 to 6.1.2 are particularly impacted. Proper measures should be taken to secure these endpoints and manage user permissions effectively.

Affected Version(s)

Joomla! CMS 4.0.0-5.4.6

Joomla! CMS 6.0.0-6.1.2

References

https://www.joomla.org/
product
https://developer.joomla.org/security-centre/20260804-cor...
vendor-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

ebadfd
.