Vulnerability DatabaseCVE-2026-90907
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CVE-2026-90907
Published:September 29, 2026
Updated:October 10, 2026
Joomla! Core - [20260902] - Core - Unauthorized user account creation via profile.save controller in Joomla 1.5.0-5.4.8, 6.0.0-6.1.3 - The profile.save controller did not check the login state of a user, allowing the creation of guest-level users on sites without active user registration.
Affected Packages
https://github.com/joomla/joomla-cms.git (GITHUB):
Affected version(s) >=6.0.0-alpha1 <6.1.4
Fix Suggestion:
Update to version 6.1.4
https://github.com/joomla/joomla-cms.git (GITHUB):
Affected version(s) >=5.0.0-alpha1 <5.4.9
Fix Suggestion:
Update to version 5.4.9
Related Resources (2)
https://www.joomla.org/
https://developer.joomla.org/security-centre/1082-20260902-core-unauthorized-user-account-creation-via-profile-save-controller.html
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CVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Authorization Bypass Through User-Controlled Key
CWE-639
EPSS
Base Score:
0.19