CVE-2026-11607 TYPO3 CVE debrief

Who should care

Users of TYPO3 CMS, especially those with backend user accounts and access to the Form Framework, should be aware of this vulnerability and take immediate action to mitigate the risk.

Technical summary

The vulnerability arises from the improper handling of form definition files in TYPO3 CMS. Specifically, the application fails to properly validate the file extension of form definitions, allowing files not ending in .form.yaml to be processed. This can be exploited by malicious users to execute arbitrary SQL statements, potentially leading to privilege escalation.

Defensive priority

High

Recommended defensive actions

• Update TYPO3 CMS to a version that addresses the vulnerability: 10.4.57 or later, 11.5.51 or later, 12.4.46 or later, 13.4.31 or later, or 14.3.3 or later.
• Restrict access to the Form Framework to only trusted backend users.
• Monitor for suspicious activity and implement additional security measures to detect and prevent potential exploits.

Evidence notes

The CVE record and NVD detail pages provide official information about the vulnerability. Additional references include TYPO3's security advisory and GitHub commits addressing the issue. [See resourceLinkAnnotations for links]

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.