CVE-2026-73337: CWE-287 Improper Authentication in Joomla! Project Joomla! CMS
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.
AI Analysis
Technical Summary
This vulnerability (CWE-287: Improper Authentication) in Joomla! CMS arises from insufficient state validation in the MFA implementation. Specifically, versions 4.0.0 to 5.4.6 and 6.0.0 to 6.1.2 contain a logic flaw that allows attackers to bypass two-factor authentication checks, undermining the intended security controls. The CVSS 4.0 base score is 8.2, indicating a high impact with network attack vector, low attack complexity, and no user interaction required.
Potential Impact
Successful exploitation allows an attacker to bypass two-factor authentication, potentially gaining unauthorized access to user accounts without needing the second authentication factor. This can lead to account compromise and unauthorized actions within the Joomla! CMS environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the Joomla! Project vendor advisory for current remediation guidance. No official fix or temporary workaround is indicated in the provided data. Users should monitor official Joomla! communications for updates and apply patches once available.
CVE-2026-73337: CWE-287 Improper Authentication in Joomla! Project Joomla! CMS
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.
CVSS v4.0
Score 8.2high
Affected software
pkg:composer/joomla/joomla-cmsRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-287: Improper Authentication) in Joomla! CMS arises from insufficient state validation in the MFA implementation. Specifically, versions 4.0.0 to 5.4.6 and 6.0.0 to 6.1.2 contain a logic flaw that allows attackers to bypass two-factor authentication checks, undermining the intended security controls. The CVSS 4.0 base score is 8.2, indicating a high impact with network attack vector, low attack complexity, and no user interaction required.
Potential Impact
Successful exploitation allows an attacker to bypass two-factor authentication, potentially gaining unauthorized access to user accounts without needing the second authentication factor. This can lead to account compromise and unauthorized actions within the Joomla! CMS environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the Joomla! Project vendor advisory for current remediation guidance. No official fix or temporary workaround is indicated in the provided data. Users should monitor official Joomla! communications for updates and apply patches once available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Joomla
- Date Reserved
- 2026-08-12T09:07:21.642Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a8482f1c6e8be03326f9aad
Added to database: 08/18/2026, 16:06:09 UTC
Last enriched: 08/18/2026, 16:20:24 UTC
Last updated: 08/19/2026, 05:05:07 UTC
Views: 8
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