CVE-2026-11607
TYPO3 CMS has Broken Access Control in its Form Framework
Description
### Problem Backend users with access to the Form Framework were able to use files not ending in `.form.yaml` as form definitions, which were processed without denying the incorrect file extension. 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 “Ethan” for reporting this issue, and TYPO3 core & security team member Oliver Hader for fixing it. ### Resources * [TYPO3-CORE-SA-2026-019](https://typo3.org/security/advisory/typo3-core-sa-2026-019)
How to fix CVE-2026-11607
To remediate CVE-2026-11607, upgrade the affected package to a fixed version below.
- —upgrade to 10.4.57 or later
- —upgrade to 10.4.57 or later
Is CVE-2026-11607 being exploited?
No exploitation signal available. Neither CISA KEV nor a current EPSS score has been published for CVE-2026-11607.
Affected packages (2)
- from 0, < 10.4.57
- from 0, < 10.4.57
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | 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 |