CVE-2026-47346
TYPO3 CMS - Broken Access Control in Form Framework
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.
INFO
Published Date :
June 9, 2026, 11:16 a.m.
Last Modified :
July 23, 2026, 8:10 a.m.
Remotely Exploit :
Yes !
Source :
f4fb688c-4412-4426-b4b8-421ecf27b14a
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | HIGH | f4fb688c-4412-4426-b4b8-421ecf27b14a | ||||
| CVSS 4.0 | HIGH | f4fb688c-4412-4426-b4b8-421ecf27b14a |
Solution
- Update TYPO3 CMS to a fixed version.
- Apply vendor security patches immediately.
- Review file upload restrictions.
- Validate uploaded file extensions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-47346.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-47346 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-47346
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-47346 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-47346 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Translated by [email protected]
Jul. 23, 2026
Action Type Old Value New Value Added Translation Title: TYPO3 CMS de TYPO3, Description: Usuarios de backend con permisos de escritura de archivos pudieron cargar archivos de definición de formulario con extensiones de mayúsculas y minúsculas (p. ej., .FORM.YAML) para eludir la restricción de carga del Form Framework. Archivos de definición de formulario manipulados maliciosamente pueden usarse para ejecutar sentencias SQL arbitrarias, permitiendo a los atacantes escalar privilegios mediante la creación de cuentas de usuario de backend administrativas. Este problema afecta a las versiones de TYPO3 CMS anteriores a 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 y 14.0.0-14.3.2. -
CVE Modified by f4fb688c-4412-4426-b4b8-421ecf27b14a
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/TYPO3/typo3', 'vendor': 'TYPO3', 'modules': ['Form'], 'product': 'TYPO3 CMS', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '10.4.57', 'versionType': 'semver'}, {'status': 'affected', 'version': '11.0.0', 'lessThan': '11.5.51', 'versionType': 'semver'}, {'status': 'affected', 'version': '12.0.0', 'lessThan': '12.4.46', 'versionType': 'semver'}, {'status': 'affected', 'version': '13.0.0', 'lessThan': '13.4.31', 'versionType': 'semver'}, {'status': 'affected', 'version': '14.0.0', 'lessThan': '14.3.3', 'versionType': 'semver'}], 'packageName': 'typo3/cms-form', 'collectionURL': 'https://packagist.org', 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-47346', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-09T12:51:14.282222Z'} -
New CVE Received by f4fb688c-4412-4426-b4b8-421ecf27b14a
Jun. 09, 2026
Action Type Old Value New Value 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/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 Added CWE CWE-178 Added CWE CWE-862 Added Reference https://github.com/TYPO3/typo3/commit/2030617e6f273cee7b756c695f0a48a45a31eb47 Added Reference https://github.com/TYPO3/typo3/commit/eb2b2251d90339d3ab55df3d4c0378ae0c780b45 Added Reference https://typo3.org/security/advisory/typo3-core-sa-2026-008