CVE-2026-47351 TYPO3 CMS - Broken Access Control in Clipboard
Backend users can bypass read permission checks to view unauthorized records and files via the clipboard feature.
- 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-2026-47351?
CVE-2026-47351 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
Backend users were able to insert arbitrary records and files into the TYPO3 clipboard without proper read permission checks, which allowed users to gather information about records and files they were not authorized to view. This issue affects TYPO3 CMS versions 10.4.0-13.4.30 and 14.0.0-14.3.2.
Which versions are affected by CVE-2026-47351?
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-2026-47351?
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-2026-47351 being exploited?
There is no known exploitation of CVE-2026-47351 in the wild and no public exploit code.
Sources
Also known as GHSA-q93m-25xv-94hh.