---
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: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-639
vendor: joomla
product: joomla!
affected:
  - 'joomla! >= 1.5.0, < 5.4.8'
  - 'joomla! >= 6.0.0, < 6.1.3'
patched:
  - joomla! 6.1.3
published: '2026-09-29'
updated: '2026-10-06'
sourceUpdated: '2026-10-06T16:48:24.527'
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
  - exploit-available
  - cve.org
epss: 0.00247
epssPercentile: 0.15892
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/aorozco-sys/CVE-2026-90907'
  checkedAt: '2026-10-27T19:21:50.300Z'
exploitAvailable: true
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-30T15:09:34.433103Z'
scores:
  nvd: 5.3
  cna: 6.9
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.

## Affected

- `joomla! >= 1.5.0, < 5.4.8`
- `joomla! >= 6.0.0, < 6.1.3`

## Remediation

Upgrade past the affected range:

- `joomla! 6.1.3`