Vulnerability · Published Mar 17, 2026 · Assigned by TYPO3
CVE-2026-4208Authentication Bypass in extension "E-Mail MFA Provider" (mfa_email)
High 7.7
In plain English
A high-severity authorization bypass via user-controlled key in Extension "E-Mail MFA Provider" from TYPO3. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 4.0)7.7High
Exploit odds (30 days)0.3%top 80.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | ralffreit/mfa-email | 1.0.7 | GHSA-29r8-gvx4-r9w3 |
| Packagist | ralffreit/mfa-email | 2.0.1 | GHSA-29r8-gvx4-r9w3 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TYPO3 | Extension "E-Mail MFA Provider" | 0 – through 1.0.52.0.0 |
Weakness: CWE-639 · Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N