CVE-2026-90913

Joomla! Core - [20260903] - Core - Improper ACL checks for access level webservice endpoints in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - An improper access check allows unauthorized users to perform mutation actions in access level endpoints.

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://developer.joomla.org/security-centre/1083-20260903-core-improper-acl-checks-for-user-level-webservice-endpoints.html	Patch Vendor Advisory
https://www.joomla.org/	Product

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:joomla:joomla\!::::::::
	cpe:2.3:a:joomla:joomla\!::::::::

History

06 Oct 2026, 16:33

Type	Values Removed	Values Added
First Time		Joomla joomla\! Joomla
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.5
CPE		cpe:2.3:a:joomla:joomla\!::::::::
References	~~() https://developer.joomla.org/security-centre/1083-20260903-core-improper-acl-checks-for-user-level-webservice-endpoints.html -~~	() https://developer.joomla.org/security-centre/1083-20260903-core-improper-acl-checks-for-user-level-webservice-endpoints.html - Patch, Vendor Advisory
References	~~() https://www.joomla.org/ -~~	() https://www.joomla.org/ - Product

29 Sep 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-29 17:17

Updated : 2026-10-06 16:33

NVD link : CVE-2026-90913

Mitre link : CVE-2026-90913

CVE.ORG link : CVE-2026-90913

JSON object : View

Products Affected

joomla

joomla\!

CWE

CWE-284

Improper Access Control

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