CVE-2026-49738: TYPO3 CMS

Low severity, CVSS 2.1. EPSS: 0.5% chance of exploitation in the next 30 days.

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, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.

Affected products

• TYPO3 TYPO3 CMS: before 10.4.57 (fixed in 10.4.57); from 11.0.0, before 11.5.51 (fixed in 11.5.51); from 12.0.0, before 12.4.46 (fixed in 12.4.46); from 13.0.0, before 13.4.31 (fixed in 13.4.31); from 14.0.0, before 14.3.3 (fixed in 14.3.3)

Published 2026-06-09. Last modified 2026-07-23.