The path allowance check in GeneralUtility::isAllowedAbsPath() performed a plain string prefix comparison without requiring a directory separator boundary, causing a path like /var/www/html-other/secret.yaml to be incorrectly accepted as valid when the project root was /var/www/html. Administrator users with access to the File Abstraction Layer were able to create new file storage definitions pointing to directories outside the project root, bypassing this path check. 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.

Attack Vector Network

Attack Complexity Low

Privileges Required High

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

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.

The EPSS score is 0.00032.

Exploitation none

Automatable no

Technical Impact partial

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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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/150a983a5d687cedcfc33bbe9c335d9a13fd05e5 cve-icon cve-icon
https://github.com/TYPO3/typo3/commit/44c2fa9807944136218a0842e3051c0a379a002d cve-icon cve-icon
https://typo3.org/security/advisory/typo3-core-sa-2026-016 cve-icon cve-icon
History

Tue, 09 Jun 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

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

Type Values Removed Values Added
Description The path allowance check in GeneralUtility::isAllowedAbsPath() performed a plain string prefix comparison without requiring a directory separator boundary, causing a path like /var/www/html-other/secret.yaml to be incorrectly accepted as valid when the project root was /var/www/html. Administrator users with access to the File Abstraction Layer were able to create new file storage definitions pointing to directories outside the project root, bypassing this path check. 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.
Title TYPO3 CMS - Broken Access Control in File Abstraction Layer
First Time appeared Typo3
Typo3 typo3
Weaknesses CWE-22
CPEs cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*
Vendors & Products Typo3
Typo3 typo3
References
Metrics cvssV4_0

{'score': 2.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: TYPO3

Published:

Updated: 2026-06-09T13:43:12.573Z

Reserved: 2026-06-01T10:52:50.597Z

Link: CVE-2026-49738

cve-icon Vulnrichment

Updated: 2026-06-09T13:43:06.922Z

cve-icon NVD

Status : Deferred

Published: 2026-06-09T11:16:53.247

Modified: 2026-06-09T13:46:50.540

Link: CVE-2026-49738

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses