GHSA-3v8v-4wg6-r7qh
TYPO3 CMS: Destructive Actions on File Mount Folders
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Packagist | typo3/cms-core | < 10.4.57 | 10.4.57 |
| Packagist | typo3/cms-core | >= 11.0.0, < 11.5.51 | 11.5.51 |
| Packagist | typo3/cms-core | >= 12.0.0, < 12.4.46 | 12.4.46 |
| Packagist | typo3/cms-core | >= 13.0.0, < 13.4.31 | 13.4.31 |
| Packagist | typo3/cms-core | >= 14.0.0, < 14.3.3 | 14.3.3 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Problem
Non-privileged backend users with file mount access were able to perform write operations (move, delete, rename) on folders representing the root of an active file mount due to missing authorization restrictions.
### Solution
Update to TYPO3 versions 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, 14.3.3 LTS that fix the problem described.
### Credits
TYPO3 CMS thanks Arne Uplegger for reporting this issue, and TYPO3 security team member Elias Häußler for fixing it.
### Resources
* [TYPO3-CORE-SA-2026-007](https://typo3.org/security/advisory/typo3-core-sa-2026-007)
References
External links from the advisory. They lead to third-party sites.
- https://github.com/TYPO3/typo3/security/advisories/GHSA-3v8v-4wg6-r7qh
- https://nvd.nist.gov/vuln/detail/CVE-2026-47343
- https://github.com/TYPO3/typo3/commit/504e72470ff72aaf5d2256878bf473747f389798
- https://github.com/TYPO3/typo3/commit/ac4125aef8b9b94528a7f74db2444db57b05a87b
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-47343.yaml
- https://github.com/TYPO3/typo3
- https://typo3.org/security/advisory/typo3-core-sa-2026-007