Auth bypass in Typo3 Extension "E-mail Mfa Provider"

CVE-2026-4208

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.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.001 (28.1th percentile) — read the EPSS interpretation.