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OpenAdvisories
Medium · 6.9 Public exploit CVE-2026-90907 EUVD-2026-89085GHSA-j6fq-w4r3-5q3g

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

Published Sep 29, 2026 · Updated Sep 30, 2026 · Assigned by Joomla

Vendor: Joomla! Project Product: Joomla! CMS Category: Web / CMS

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.

Affected products

VendorProductAffectedFixed
Joomla! Project Joomla! CMS 1.5.0-5.4.8, 6.0.0-6.1.3 —

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • aorozco-sys/CVE-2026-90907 ★ 1 · Oct 1, 2026

    CVE-2026-90907 (CVSS 6.9) — Joomla! CMS unauthorized user account creation via com_users profile.save (authorization bypass). Non-destructive checker + authorized-use exploit PoC. Fixed in 5.4.9 / 6.…

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 1

References