CVE-2026-48897 HIGH

CVE-2026-48897: Joomla! Core - [20260512] - MFA Authentication Bypass

Vendor Joomla! Project
Product Joomla! CMS
Weakness CWE-287 · Improper authentication
Published May 26, 2026
Last update May 27, 2026
View on NVD All CVEs

CVSS base score

8.2/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Insufficient state checks lead to a vector that allows to bypass 2FA checks.

Explanation of Vulnerability in Simple Terms

02Summary

Joomla! CMS versions 4.0.0 through 5.4.5 contain an authentication bypass vulnerability. An attacker can bypass authentication mechanisms without valid credentials due to improper authentication validation. This allows unauthorized access to restricted functionality or data. Sites should update to a version newer than 5.4.5 as soon as possible.

What an attacker can do

03Attacker Capabilities

Bypass authentication and gain unauthorized access to restricted areas or functionality.

Potential impact on your site

04Site Impact

Unauthorized users can access admin functions, user data, or other protected resources without logging in.

Conditions required to exploit

05Prerequisites

Network access to the Joomla site; no valid credentials or user interaction required.

Key dates

06Disclosure timeline

May 26, 2026 CVE published
May 27, 2026 Record updated

Related vulnerabilities

08Related CVE

CVE-2024-10020 Heateor Social Login WordPress <= 1.1.35 - Authentication Bypass via Disqus OAuth provider CVE-2024-10097 Loginizer Security and Loginizer <= 1.9.2 - Authentication Bypass via WordPress.com OAuth provider CVE-2026-0953 Tutor LMS Pro <= 3.9.5 - Authentication Bypass via Social Login CVE-2024-12919 Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction <= 2.13.7 - Authentication Bypass via pms_payment_id CVE-2026-5076 ARMember Premium <= 7.3.1 - Insecure Password Reset Mechanism to Unauthenticated Privilege Escalation