CVE-2026-4208— Authentication Bypass in extension "E-Mail MFA Provider" (mfa_email)
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I. Basic Information for CVE-2026-4208
Vulnerability Information
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Vulnerability Title
Authentication Bypass in extension "E-Mail MFA Provider" (mfa_email)
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: NVD (National Vulnerability Database)
Vulnerability Title
TYPO3 E-Mail MFA Provider 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TYPO3 E-Mail MFA Provider是Ralf Freit个人开发者的一个基于电子邮件实现多因素身份验证的扩展组件。 TYPO3 E-Mail MFA Provider 存在安全漏洞，该漏洞源于扩展程序在成功身份验证后未能正确重置生成的MFA代码，可能导致未来登录尝试时通过提供空字符串作为MFA代码来绕过MFA。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| TYPO3 | Extension "E-Mail MFA Provider" | 0 ~ 1.0.5 | - |
II. Public POCs for CVE-2026-4208
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-4208 (1)
Same Patch Batch · TYPO3 · 2026-03-17 · 3 CVEs total
| CVE-2026-4202 | Broken Access Control in extension "Redirect Tab" | |
| CVE-2026-1323 | Insecure Deserialization in extension "Mailqueue" (mailqueue) |
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Same weakness: CWE-639
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V. Comments for CVE-2026-4208
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