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TI-2026-03655 Aliases CVE-2026-4208GHSA-29r8-gvx4-r9w3

Authentication Bypass in extension "E-Mail MFA Provider" (mfa_email)

Priority LOW 35CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-639.

Summary

The extension fails to properly reset the generated MFA code after successful authentication. This leads to a possible MFA bypass for future login attempts by providing an empty string as MFA code to the extensions MFA provider.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00272 19th percentileScored 2026-11-07
Fix Fixed ralffreit/mfa-email (Packagist): 1.0.7, 2.0.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TYPO3Extension "E-Mail MFA Provider"up to 1.0.5; 2.0.0—No fix listedCNA
—ralffreit/mfa-email (Packagist)before 1.0.71.0.7Patch availableGHSA-29r8-gvx4-r9w3
—ralffreit/mfa-email (Packagist)2.0.0 to before 2.0.12.0.1Patch availableGHSA-29r8-gvx4-r9w3
  • Extension "E-Mail MFA Provider" VendorTYPO3 Affected up to 1.0.5; 2.0.0 Fixed in — No fix listed CNA
  • ralffreit/mfa-email (Packagist) Vendor— Affected before 1.0.7 Fixed in 1.0.7 Patch available GHSA-29r8-gvx4-r9w3
  • ralffreit/mfa-email (Packagist) Vendor— Affected 2.0.0 to before 2.0.1 Fixed in 2.0.1 Patch available GHSA-29r8-gvx4-r9w3

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:mrsilaz:mfa_mail:*:*:*:*:*:typo3:*:*before 1.0.7VulnerableMrsilaz
cpe:2.3:a:mrsilaz:mfa_mail:2.0.0:*:*:*:*:typo3:*:*2.0.0VulnerableMrsilaz
  • cpe:2.3:a:mrsilaz:mfa_mail:*:*:*:*:*:typo3:*:* Versions before 1.0.7 Vulnerable ·Mrsilaz
  • cpe:2.3:a:mrsilaz:mfa_mail:2.0.0:*:*:*:*:typo3:*:* Versions 2.0.0 Vulnerable ·Mrsilaz

Remediation

  • Fix · GHSA-29r8-gvx4-r9w3 ralffreit/mfa-email (Packagist) Fixed in 1.0.7 Advisory →
  • Fix · GHSA-29r8-gvx4-r9w3 ralffreit/mfa-email (Packagist) Fixed in 2.0.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-4208
  2. 2026-10-03 Alias added: GHSA-29r8-gvx4-r9w3

References

Advisory 2

Other 4

  • TI-2023-10314 Persisted Cross-Site Scripting in Frontend Rendering in typo3 CVSS 3.1HIGH 8.8
  • TI-2010-03538 The jumpUrl (aka access tracking) implementation in tslib/class.tslib_fe.php in TYPO3… CVSS 2.0HIGH 7.1
  • TI-2009-00775 The jumpUrl mechanism in class.tslib_fe.php in TYPO3 3.3.x through 3.8.x, 4.0 before… CVSS 2.0MEDIUM 5.0
  • TI-2025-30547 The sr_feuser_register extension through 12.4.8 for TYPO3 allows Remote Code Execution. CVSS 3.1CRITICAL 10.0
  • TI-2019-08867 The PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before… CVSS 3.1CRITICAL 9.8
  • TI-2008-04019 Unspecified vulnerability in the TYPO3 Secure Directory (kw_secdir) extension before… CVSS 2.0HIGH 10.0
See all 411 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences