CVE-2026-73337

High

Description

Joomla! Core - [20260807] - MFA Authentication Bypass in Joomla 4.0.0-5.4.7 and 6.0.0-6.1.2 - Insufficient state checks lead to a vector that allows to bypass 2FA checks.

SeverityHigh

CVSS7.5

Exploit probability—

Product

Joomla\!

PublishedAug 18, 2026

First seenAug 18, 2026

Weakness typeCWE-287Improper authentication

How to fix

Update

joomla joomla\!5.4.8, 6.1.3 or later

Vendor advisories

developer.joomla.org/security-centre/1074-20260807-core-mfa-authentication-bypass.html

Affected products

Product	Affected versions	Fixed in
joomla joomla\!	4.0.0 ≤ v < 5.4.8, 6.0.0 ≤ v < 6.1.3	5.4.8, 6.1.3

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