CVE-2026-4208 — Authentication Bypass in ralffreit/mfa-email — CVE...

HIGH

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

Published March 17, 2026Updated May 5, 2026Source: osv

Summary

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.

Advisory Timeline

First published March 17, 2026 (209 days ago).
Last revised May 5, 2026 — 49 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Composer

Update ralffreit/mfa-email to 1.0.7 or later

composer require "ralffreit/mfa-email:^1.0.7"

Composer

Update ralffreit/mfa-email to 2.0.1 or later

composer require "ralffreit/mfa-email:^2.0.1"

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (2)

Affects 1 ecosystem: packagist (1).

Package	Ecosystem	Affected	Fixed In
ralffreit/mfa-email	packagist	1.0.0, 1.0.1, 1.0.2, 1.0.3 (+2 more)	1.0.7
ralffreit/mfa-email	packagist	2.0.0	2.0.1

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-639
Insecure Direct Object Reference (IDOR)MITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.8 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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

References

Frequently Asked Questions

What is CVE-2026-4208?: Authentication Bypass in extension "E-Mail MFA Provider" (mfa_email) This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.8/10).
How do I check if my project is affected by CVE-2026-4208?: CVE-2026-4208 affects ralffreit/mfa-email. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-4208 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

8.8

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-29r8-gvx4-r9w3

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