CVE-2026-49738

published 2026-06-09

CVE-2026-49738: The path allowance check in GeneralUtility::isAllowedAbsPath() performed a plain string prefix comparison without requiring a directory separator boundary…

Priority P4 16 low 2.1 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 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

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.

Affected

10 ranges

Vendor	Product	Version range	Fixed in
typo3	cms-core	>= 0 < 10.4.57	10.4.57
typo3	cms-core	>= 11.0.0 < 11.5.51	11.5.51
typo3	cms-core	>= 12.0.0 < 12.4.46	12.4.46
typo3	cms-core	>= 13.0.0 < 13.4.31	13.4.31
typo3	cms-core	>= 14.0.0 < 14.3.3	14.3.3
typo3	typo3_cms	< 10.4.57	10.4.57
typo3	typo3_cms	>= 11.0.0 < 11.5.51	11.5.51
typo3	typo3_cms	>= 12.0.0 < 12.4.46	12.4.46
typo3	typo3_cms	>= 13.0.0 < 13.4.31	13.4.31
typo3	typo3_cms	>= 14.0.0 < 14.3.3	14.3.3

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CWE-22