CVE-2026-23899 PUBLISHED

Joomla! Core - [20260306] - Improper access check in webservice endpoints

Assigner: Joomla
Reserved: 17.01.2026 Published: 01.04.2026 Updated: 01.04.2026

An improper access check allows unauthorized access to webservice endpoints.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.6

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

CVSS 4.0

Vendor	Joomla! Project
Product	Joomla! CMS
Versions	Default: unaffected Version 4.0.0-5.4.3 is affected Version 6.0.0-6.0.3 is affected