CVE-2026-92227
Received Received - Intake

MFA Authentication Bypass in Joomla Core

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: Joomla! Project

Description
Joomla! Core - [20260914] - Core - MFA Authentication Bypass through rememberme cookies in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - The premature issuance of an rememberme cookie leads to a MFA bypass vulnerability.

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Meta Information

Published
2026-09-29
Last Modified
2026-09-29
Generated
2026-09-29
AI Q&A
2026-09-29
EPSS Evaluated
N/A
NVD
CVE-2026-92227
EUVD
EUVD-2026-89074

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
joomla core From 4.0.0 (inc) to 5.4.8 (exc)
joomla core From 6.0.0 (inc) to 6.1.3 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-287 When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

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Executive Summary

This vulnerability is an MFA authentication bypass in Joomla! Core versions 4.0.0-5.4.8 and 6.0.0-6.1.3. It occurs due to the premature issuance of a rememberme cookie, which allows attackers to bypass multi-factor authentication (MFA) protections.

Detection Guidance

To detect this vulnerability, check if your Joomla! installation is running versions 4.0.0-5.4.8 or 6.0.0-6.1.3. Inspect server logs for unusual authentication attempts bypassing MFA via rememberme cookies. Look for premature cookie issuance patterns in web server access logs.

Impact Analysis

Attackers could exploit this to gain unauthorized access to Joomla! accounts without completing MFA, potentially leading to data breaches, unauthorized modifications, or further lateral movement within affected systems.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating confidentiality requirements in GDPR and HIPAA. Organizations may face compliance violations, fines, or reputational damage if exploited.

Mitigation Strategies

Update Joomla to the latest patched version (5.4.9 or later for Joomla 4.x, 6.1.4 or later for Joomla 6.x) to address the MFA bypass via rememberme cookies.

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