CVE-2026-48958 PUBLISHED

Joomla! Core - [20260712] - Incorrect Access Control in com_fields webservice endpoints

Assigner: Joomla
Reserved: 26.05.2026 Published: 07.07.2026 Updated: 08.07.2026

An improper access check allows unauthorized users to create custom fields via webservices endpoints.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H
CVSS Score: 6.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	High
Attack Complexity	Low	Integrity	Low	Integrity	High
Attack Requirements	None	Availability	None	Availability	High
Privileges Required	High
User Interaction	None

CVSS 4.0

Vendor	Joomla! Project
Product	Joomla! CMS
Versions	Default: unaffected Version 4.0.0-5.4.6 is affected Version 6.0.0-6.1.1 is affected

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