---
id: CVE-2026-90907
title: >-
  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-le…
summary: >-
  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-le…
severity: medium
cvss: 6.9
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'
cwe:
  - CWE-639
vendor: Joomla! Project
product: Joomla! CMS
affected:
  - joomla_cms 1.5.0-5.4.8
  - joomla_cms 6.0.0-6.1.3
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T17:17:13.110'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90907'
references:
  - url: >-
      https://developer.joomla.org/security-centre/1082-20260902-core-unauthorized-user-account-creation-via-profile-save-controller.html
    label: security@joomla.org
  - url: 'https://www.joomla.org/'
    label: security@joomla.org
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-09-29T17:41:02.207Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.