CVE-2026-4208

HIGH

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

Title source: cna

Description

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.

References (1)

Core 1

Core References

https://typo3.org/security/advisory/typo3-ext-sa-2026-007

Scores

CVSS v3 8.8

EPSS 0.0010

EPSS Percentile 28.0%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

Details

CWE

CWE-639

Status published

Products (6)

mrsilaz/mfa_mail 2.0.0

mrsilaz/mfa_mail < 1.0.7

ralffreit/mfa-email 0Packagist

TYPO3/Extension "E-Mail MFA Provider" < 1.0.5

TYPO3/Extension "E-Mail MFA Provider" < 2.0.0

TYPO3/Extension "E-Mail MFA Provider" 2.0.0

Published Mar 17, 2026

Tracked Since Mar 17, 2026