CVE-2026-47346

TYPO3 CMS - Broken Access Control in Form Framework

Published Jun 9, 2026 CVSS 4.0 · 7.6 High EPSS < 1% KEV · Not listed
Description
Backend users with file write permissions were able to upload form definition files with mixed-case extensions (e.g., .FORM.YAML) to bypass the Form Framework's upload restriction. Maliciously crafted form definition files can be used to execute arbitrary SQL statements, allowing attackers to escalate privileges by creating administrative backend user accounts. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-hwvq-2w67-rvxp TYPO3 CMS has Broken Access Control in its Form Framework
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Backend users with file write permissions were able to upload form definition files with mixed-case extensions (e.g., .FORM.YAML) to bypass the Form Framework's upload restriction. Maliciously crafted form definition files can be used to execute arbitrary SQL statements, allowing attackers to escalate privileges by creating administrative backend user accounts. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.
Title TYPO3 CMS - Broken Access Control in Form Framework
First Time appeared Typo3
Typo3 typo3
Weaknesses CWE-178
CWE-862
CPEs cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
Vendors & Products Typo3
Typo3 typo3
References
Metrics cvssV4_0

{'score': 7.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TYPO3
Published
Updated
Jun 11, 2026, 1:25 PM
Reserved
May 19, 2026, 12:49 PM
Status
Deferred
Published
Jun 9, 2026, 11:16 AM
Modified
Jul 23, 2026, 8:10 AM