CVE-2026-23899: Joomla! Core - [20260306] - Improper access check in webservice endpoints
Published Apr 1, 2026
·Updated
An improper access check allows unauthorized access to webservice endpoints.
Affected Software
3 affected components
Joomla Joomla Core
Joomla Joomla\!>=3.0.0<5.4.4
Joomla Joomla\!>=6.0.0<6.0.4
Event History
Apr 1, 2026
CVE Published
via MITRE·09:03 AM
Data Sourced
via MITRE·09:03 AM
DescriptionWeakness
Data Sourced
via NVD·10:16 AM
DescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-23899?
CVE-2026-23899 has been assigned a high severity rating due to the risk of unauthorized access to sensitive endpoints.
2
How do I fix CVE-2026-23899?
To fix CVE-2026-23899, update your Joomla! Core version to the latest release that addresses this improper access check vulnerability.
3
What type of vulnerability is CVE-2026-23899?
CVE-2026-23899 is classified as an improper access check vulnerability affecting webservice endpoints.
4
Who is affected by CVE-2026-23899?
CVE-2026-23899 affects all versions of Joomla! Core prior to the security patch released for this issue.
5
How does CVE-2026-23899 impact Joomla! users?
CVE-2026-23899 allows unauthorized users to access webservice endpoints, potentially leading to data exposure and security breaches.