PT-2026-25879 · Unknown · Multi-Factor Authentication (Mfa) Extension

Jan Holtkötter · Published 2026-03-17 · Updated 2026-03-17 · CVE-2026-4208

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions The product name cannot be determined. (affected versions not specified)

Description The extension does not correctly reset the generated Multi-Factor Authentication (MFA) code after successful authentication. This can lead to a possible MFA bypass for future login attempts by providing an empty string as the MFA code to the extension’s MFA provider.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-4208

GHSA-29R8-GVX4-R9W3

Affected Products

Multi-Factor Authentication (Mfa) Extension

References · 10

• https://osv.dev/vulnerability/GHSA-29r8-gvx4-r9w3 · Vendor Advisory
• https://typo3.org/security/advisory/typo3-ext-sa-2026-007 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-4208 · Security Note
• https://github.com/MrSilaz/mfa_email/releases/tag/v1.0.7 · Note
• https://github.com/MrSilaz/mfa_email/releases/tag/v2.0.1 · Note
• https://github.com/MrSilaz/mfa_email/commit/0bb7e85b236a5232f7b092915453dd7c3da48f12 · Note
• https://github.com/MrSilaz/mfa_email · Note
• https://twitter.com/CVEarity/status/2033956037045428380 · Twitter Post
• https://twitter.com/CVEnew/status/2033994288993079665 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2033840634641981839 · Twitter Post