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Joomla! Core Two-Factor Authentication Bypass Vulnerability

Vulnerability

A vulnerability in Joomla! Core has been identified that allows for bypassing two-factor authentication (2FA) checks. This issue arises from insufficient state checks, creating a vector for authentication bypass. The vulnerability affects Joomla! CMS versions 4.0.0 through 5.4.5 and 6.0.0 through 6.1.0.

Impact

Exploitation of this vulnerability allows users to bypass two-factor authentication, potentially leading to unauthorized access.

Remediation

Users are advised to upgrade to Joomla! CMS version 5.4.6 or 6.1.1.

Added: May 26, 2026, 10:58 PM
Updated: May 26, 2026, 10:58 PM

Vulnerability Rating

Custom Algorithm
spread
7.6
impact
5.0
exploitability
7.6
remediation
7.7
relevance
9.0
threat
0.0
urgency
2.9
incentive
4.2

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.