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, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| TYPO3 | TYPO3 CMS | < 10.4.57, 11.0.0 – < 11.5.51, 12.0.0 – < 12.4.46, 13.0.0 – < 13.4.31, 14.0.0 – < 14.3.3 | 10.4.57 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Packagist | typo3/cms-core | < 10.4.57 | 10.4.57 | GHSA-jf56-v8jc-jcc5 |
| Packagist | typo3/cms-core | >= 11.0.0, < 11.5.51 | 11.5.51 | GHSA-jf56-v8jc-jcc5 |
| Packagist | typo3/cms-core | >= 12.0.0, < 12.4.46 | 12.4.46 | GHSA-jf56-v8jc-jcc5 |
| Packagist | typo3/cms-core | >= 13.0.0, < 13.4.31 | 13.4.31 | GHSA-jf56-v8jc-jcc5 |
| Packagist | typo3/cms-core | >= 14.0.0, < 14.3.3 | 14.3.3 | GHSA-jf56-v8jc-jcc5 |
Advisories 1
- WID-SEC-2026-1835 TYPO3 Core: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 9, 2026
References
- https://typo3.org/security/advisory/typo3-core-sa-2026-016 vendor-advisory
- Git commit of main branch patch
- Git commit of 13.4 branch patch