CVE-2026-90907

Medium

Description

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.

SeverityMedium

CVSS5.3

Exploit probability—

Product

Joomla\!

PublishedSep 29, 2026

First seenSep 29, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

joomla joomla\!5.4.8, 6.1.3 or later

Vendor advisories

developer.joomla.org/security-centre/1082-20260902-core-unauthorized-user-account-creation-via-profile-save-controller.html

Affected products

Product	Affected versions	Fixed in
joomla joomla\!	1.5.0 ≤ v < 5.4.8, 6.0.0 ≤ v < 6.1.3	5.4.8, 6.1.3

Check your version

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