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Typo3 CVE-2026-4208

| EUVDEUVD-2026-12554 HIGH
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-03-17 TYPO3 GHSA-29r8-gvx4-r9w3
7.7
CVSS 4.0 · NVD
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Severity by source

NVD PRIMARY
7.7 HIGH
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

5
Re-analysis Queued
Apr 25, 2026 - 18:52 vuln.today
cvss_changed
Patch released
Mar 31, 2026 - 21:13 nvd
Patch available
EUVD ID Assigned
Mar 17, 2026 - 11:57 euvd
EUVD-2026-12554
Analysis Generated
Mar 17, 2026 - 11:57 vuln.today
CVE Published
Mar 17, 2026 - 08:34 nvd
HIGH 7.7

DescriptionCVE.org

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.

AnalysisAI

CVE-2026-4208 is a security vulnerability (CVSS 7.7). High severity vulnerability requiring prompt remediation.

Technical ContextAI

CWE-639 (Authorization Bypass (IDOR)). CVSS 7.7 indicates high severity.

RemediationAI

Monitor vendor channels for patch availability.

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CVE-2026-4208 vulnerability details – vuln.today

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