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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
TYPO3 TYPO3 CMS unaffected
Version Status Constraints
0 affected < 10.4.57
11.0.0 affected < 11.5.51
12.0.0 affected < 12.4.46
13.0.0 affected < 13.4.31
14.0.0 affected < 14.3.3

No data.

No data.

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Vendors Products
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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/TYPO3/typo3/commit/2030617e6f273cee7b756c695f0a48a45a31eb47 cve-icon cve-icon
https://github.com/TYPO3/typo3/commit/eb2b2251d90339d3ab55df3d4c0378ae0c780b45 cve-icon cve-icon
https://typo3.org/security/advisory/typo3-core-sa-2026-008 cve-icon cve-icon
History

Tue, 09 Jun 2026 11:15:00 +0000

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: TYPO3

Published:

Updated: 2026-06-09T10:50:21.934Z

Reserved: 2026-05-19T12:49:25.966Z

Link: CVE-2026-47346

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-09T11:16:52.320

Modified: 2026-06-09T11:16:52.320

Link: CVE-2026-47346

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-09T12:30:04Z

Weaknesses