Improper Access Check in Joomla! Affects Webservice Endpoints
CVE-2026-48958

6.4MEDIUM

Key Information:

Vendor

Joomla
Status
Joomla! Cms
Vendor
CVE Published:
7 July 2026

What is CVE-2026-48958?

An improper access check in Joomla! allows unauthorized users to exploit webservice endpoints, enabling them to create custom fields without proper authorization. This vulnerability poses a significant risk as it could lead to unauthorized data manipulation and compromise the integrity of the system.

Affected Version(s)

Joomla! CMS 4.0.0-5.4.6

Joomla! CMS 6.0.0-6.1.1

References

https://developer.joomla.org/security-centre/1066-2026071...
vendor-advisory

CVSS V4

Score:
6.4
Severity:
MEDIUM
Confidentiality:
None
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

Federico Brasili, https://www.linkedin.com/in/federico-brasili-00b4b7332/
.