CVE-2026-47352 TYPO3 CMS - Broken Access Control in Backend API
Authenticated backend users can bypass permission checks to access unauthorized file metadata via Backend API routes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-47352?
CVE-2026-47352 is a medium-severity missing authorization vulnerability in TYPO3 CMS, published on 9 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.
Weakness: CWE-862
Which versions are affected by CVE-2026-47352?
20 open source packages ship an affected version, including typo3/cms-backend and typo3/cms-core.
| Package | Affected | Fixed in |
|---|---|---|
typo3/cms-backend Packagist | All versions | 10.4.57 |
typo3/cms-backend Packagist | All versions | 10.4.57 |
typo3/cms-backend Packagist | From 11.0.0 | 11.5.51 |
typo3/cms-backend Packagist | From 11.0.0 | 11.5.51 |
typo3/cms-backend Packagist | From 12.0.0 | 12.4.46 |
typo3/cms-backend Packagist | From 12.0.0 | 12.4.46 |
14 more packages
typo3/cms-backend Packagist | From 13.0.0 | 13.4.31 |
typo3/cms-backend Packagist | From 13.0.0 | 13.4.31 |
typo3/cms-backend Packagist | From 14.0.0 | 14.3.3 |
typo3/cms-backend Packagist | From 14.0.0 | 14.3.3 |
typo3/cms-core Packagist | All versions | 10.4.57 |
typo3/cms-core Packagist | All versions | 10.4.57 |
typo3/cms-core Packagist | From 11.0.0 | 11.5.51 |
typo3/cms-core Packagist | From 11.0.0 | 11.5.51 |
typo3/cms-core Packagist | From 12.0.0 | 12.4.46 |
typo3/cms-core Packagist | From 12.0.0 | 12.4.46 |
typo3/cms-core Packagist | From 13.0.0 | 13.4.31 |
typo3/cms-core Packagist | From 13.0.0 | 13.4.31 |
typo3/cms-core Packagist | From 14.0.0 | 14.3.3 |
typo3/cms-core Packagist | From 14.0.0 | 14.3.3 |
How do I fix CVE-2026-47352?
Upgrade typo3/cms-backend to a fixed version for your release line: 10.4.57, 11.5.51, 12.4.46 or 13.4.31.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-47352 being exploited?
There is no known exploitation of CVE-2026-47352 in the wild and no public exploit code.
Sources
Also known as GHSA-2j54-93q2-3hjq.