GHSA-hwvq-2w67-rvxp
TYPO3 CMS has Broken Access Control in its Form Framework
At a glance
- Published
- Updated
- CVE
- CVE-2026-47346
- CVSS_V4
- CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Description
### Problem Backend users with file write permissions were able to upload form definition files with mixed-case extensions (e.g., `.FORM.YAML`) to bypass the Form Framework's upload restriction. Maliciously crafted form definition files can be used to execute arbitrary SQL statements, allowing attackers to escalate privileges by creating administrative backend user accounts. ### 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 Alexander Künzl for reporting this issue, and to TYPO3 core & security team members Oliver Hader and Benjamin Franzke for fixing it. ### Resources * [TYPO3-CORE-SA-2026-008](https://typo3.org/security/advisory/typo3-core-sa-2026-008)
Affected packages
| Package | Versions |
|---|---|
| Packagist · typo3/cms-core | introduced 0, fixed 10.4.57 |
| Packagist · typo3/cms-core | introduced 11.0.0, fixed 11.5.51 |
| Packagist · typo3/cms-core | introduced 12.0.0, fixed 12.4.46 |
| Packagist · typo3/cms-core | introduced 13.0.0, fixed 13.4.31 |
| Packagist · typo3/cms-core | introduced 14.0.0, fixed 14.3.3 |
| Packagist · typo3/cms-form | introduced 0, fixed 10.4.57 |
| Packagist · typo3/cms-form | introduced 11.0.0, fixed 11.5.51 |
| Packagist · typo3/cms-form | introduced 12.0.0, fixed 12.4.46 |
| Packagist · typo3/cms-form | introduced 13.0.0, fixed 13.4.31 |
| Packagist · typo3/cms-form | introduced 14.0.0, fixed 14.3.3 |
References
- https://github.com/TYPO3/typo3/security/advisories/GHSA-hwvq-2w67-rvxp WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-47346 ADVISORY
- https://github.com/TYPO3/typo3/commit/2030617e6f273cee7b756c695f0a48a45a31eb47 WEB
- https://github.com/TYPO3/typo3/commit/eb2b2251d90339d3ab55df3d4c0378ae0c780b45 WEB
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-47346.yaml WEB
- https://github.com/TYPO3/typo3 PACKAGE
- https://typo3.org/security/advisory/typo3-core-sa-2026-008 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |