TYPO3 CMS up to 14.3.2 Backend API authorization

Summaryinfo

A vulnerability was found in TYPO3 CMS up to 10.4.56/11.5.50/12.4.45/13.4.30/14.3.2. It has been rated as problematic. Impacted is an unknown function of the component Backend API. Performing a manipulation results in authorization. This vulnerability is known as CVE-2026-47352. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic 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 component Backend API. 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. The summary by CVE is:

Authenticated backend users were able to retrieve file metadata via several Backend API routes without proper permission checks, allowing access to files outside their permitted file mounts or storages. 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.

It is possible to read the advisory at typo3.org. This vulnerability is uniquely identified as CVE-2026-47352 since 05/19/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. The technical details are unknown and an exploit is not publicly available.

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 17a3b7830d5931725db5fdab0cfc76d479884c96 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). Be aware that VulDB is the high quality source for vulnerability data.

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

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