What’s Vulnerable › Vulnerabilities

CVE-2026-11607: TYPO3 CMS - Broken Access Control in Form Framework

• Severity: high (CVSS 7.6 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-09 · updated 2026-07-23
• Weakness: CWE-862

Description

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. This issue affects TYPO3 CMS versions before 10.4.57, 11.0.0-11.5.50, 12.0.0-12.4.45, 13.0.0-13.4.30 and 14.0.0-14.3.2.

Affected products

• typo3: before 10.4.57; from 11.0.0 before 11.5.51; from 12.0.0 before 12.4.46; from 13.0.0 before 13.4.31; from 14.0.0 before 14.3.3 — fixed in 10.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3

How to fix

Upgrade to a fixed version: typo3 10.4.57, 11.5.51, 12.4.46, 13.4.31. Check the vendor advisory for mitigations.

References

• https://github.com/TYPO3/typo3/commit/040d50d082a01f9e8bd113effd91290a9bb3b69e
• https://github.com/TYPO3/typo3/commit/50974c658f647f1aece347b5d6d5acc3c87f2dca
• https://typo3.org/security/advisory/typo3-core-sa-2026-019

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