TYPO3 CMS up to 14.3.2 form.yaml authorization

Summaryinfo

A vulnerability labeled as critical has been found in TYPO3 CMS up to 10.4.56/11.5.50/12.4.45/13.4.30/14.3.2. This affects an unknown function of the file form.yaml. The manipulation results in authorization. This vulnerability was named CVE-2026-11607. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, was found in TYPO3 CMS up to 10.4.56/11.5.50/12.4.45/13.4.30/14.3.2. Affected is an unknown part of the file form.yaml. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Backend users with access to the Form Framework were able to use files not ending in .form.yaml as form definitions, which were processed without denying the incorrect file extension. 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, 11.0.0-11.5.51, 12.0.0-12.4.46, 13.0.0-13.4.31 and 14.0.0-14.3.3.

The advisory is available at typo3.org. This vulnerability is traded as CVE-2026-11607 since 06/08/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Technical details are known, but there is no available exploit.

Upgrading to version 10.4.57, 11.5.51, 12.4.46, 13.4.31 or 14.3.3 eliminates this vulnerability. Applying the patch 040d50d082a01f9e8bd113effd91290a9bb3b69e is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-1835). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• TYPO3 Core

Productinfo

Type

• Content Management System

Vendor

• TYPO3

Name

• CMS

Version

• 10.4.0
• 10.4.1
• 10.4.2
• 10.4.3
• 10.4.4
• 10.4.5
• 10.4.6
• 10.4.7
• 10.4.8
• 10.4.9
• 10.4.10
• 10.4.11
• 10.4.12
• 10.4.13
• 10.4.14
• 10.4.15
• 10.4.16
• 10.4.17
• 10.4.18
• 10.4.19
• 10.4.20
• 10.4.21
• 10.4.22
• 10.4.23
• 10.4.24
• 10.4.25
• 10.4.26
• 10.4.27
• 10.4.28
• 10.4.29
• 10.4.30
• 10.4.31
• 10.4.32
• 10.4.33
• 10.4.34
• 10.4.35
• 10.4.36
• 10.4.37
• 10.4.38
• 10.4.39
• 10.4.40
• 10.4.41
• 10.4.42
• 10.4.43
• 10.4.44
• 10.4.45
• 10.4.46
• 10.4.47
• 10.4.48
• 10.4.49
• 10.4.50
• 10.4.51
• 10.4.52
• 10.4.53
• 10.4.54
• 10.4.55
• 10.4.56
• 11.5.0
• 11.5.1
• 11.5.2
• 11.5.3
• 11.5.4
• 11.5.5
• 11.5.6
• 11.5.7
• 11.5.8
• 11.5.9
• 11.5.10
• 11.5.11
• 11.5.12
• 11.5.13
• 11.5.14
• 11.5.15
• 11.5.16
• 11.5.17
• 11.5.18
• 11.5.19
• 11.5.20
• 11.5.21
• 11.5.22
• 11.5.23
• 11.5.24
• 11.5.25
• 11.5.26
• 11.5.27
• 11.5.28
• 11.5.29
• 11.5.30
• 11.5.31
• 11.5.32
• 11.5.33
• 11.5.34
• 11.5.35
• 11.5.36
• 11.5.37
• 11.5.38
• 11.5.39
• 11.5.40
• 11.5.41
• 11.5.42
• 11.5.43
• 11.5.44
• 11.5.45
• 11.5.46
• 11.5.47
• 11.5.48
• 11.5.49
• 11.5.50
• 12.4.0
• 12.4.1
• 12.4.2
• 12.4.3
• 12.4.4
• 12.4.5
• 12.4.6
• 12.4.7
• 12.4.8
• 12.4.9
• 12.4.10
• 12.4.11
• 12.4.12
• 12.4.13
• 12.4.14
• 12.4.15
• 12.4.16
• 12.4.17
• 12.4.18
• 12.4.19
• 12.4.20
• 12.4.21
• 12.4.22
• 12.4.23
• 12.4.24
• 12.4.25
• 12.4.26
• 12.4.27
• 12.4.28
• 12.4.29
• 12.4.30
• 12.4.31
• 12.4.32
• 12.4.33
• 12.4.34
• 12.4.35
• 12.4.36
• 12.4.37
• 12.4.38
• 12.4.39
• 12.4.40
• 12.4.41
• 12.4.42
• 12.4.43
• 12.4.44
• 12.4.45
• 13.4.0
• 13.4.1
• 13.4.2
• 13.4.3
• 13.4.4
• 13.4.5
• 13.4.6
• 13.4.7
• 13.4.8
• 13.4.9
• 13.4.10
• 13.4.11
• 13.4.12
• 13.4.13
• 13.4.14
• 13.4.15
• 13.4.16
• 13.4.17
• 13.4.18
• 13.4.19
• 13.4.20
• 13.4.21
• 13.4.22
• 13.4.23
• 13.4.24
• 13.4.25
• 13.4.26
• 13.4.27
• 13.4.28
• 13.4.29
• 13.4.30
• 14.3.0
• 14.3.1
• 14.3.2

License

• open-source

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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