CVE-2026-4208 - Vulnerability Details - OpenCVE

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.

Attack Vector Network

Attack Complexity High

Privileges Required Low

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

TYPO3

Extension "E-Mail MFA Provider"

unaffected

Version	Status	Constraints
`0`	affected	≤ 2.0.0

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

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

History

Tue, 17 Mar 2026 09:00:00 +0000

Type	Values Removed	Values Added
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.
Title		Authentication Bypass in extension "E-Mail MFA Provider" (mfa_email)
Weaknesses		CWE-639
References		https://typo3.org/security/advisory/typo3-ext-sa-2026-007
Metrics		cvssV4_0 `{'score': 7.7, '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'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: TYPO3

Published: 2026-03-17T08:34:52.141Z

Updated: 2026-03-17T08:34:52.141Z

Reserved: 2026-03-15T11:55:45.299Z

Link: CVE-2026-4208

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-03-17T09:16:14.810

Modified: 2026-03-17T09:16:14.810

Link: CVE-2026-4208

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-639

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