Component Type: TYPO3 CMSSubcomponent: Form Framework (ext:form)Release Date: June 9, 2026Vulnerability Type: Privilege Escalation & SQL InjectionAffected Versions: 14.0.0-14.3.2Severity: HighSuggested CVSS: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:NReferences: CVE-2026-49741, CWE-89, CWE-862 Problem Description Backend users with write access to the form_definition database table were able to directly create, update, or delete form definition records via DataHandler, bypassing the Form Framework's persistence validation and permission checks. This allowed injecting arbitrary form configurations, re-enabling attack vectors originally addressed in TYPO3-CORE-SA-2018-003, including SQL injection and privilege escalation. Solution Update to TYPO3 version 14.3.3 LTS that fixes the problem described. Credits Thanks to Selçuk Güney for reporting this issue, and to TYPO3 core & security team member Oliver Hader for fixing it. General Advice Follow the recommendations that are given in the TYPO3 Security Guide. Please subscribe to the typo3-announce mailing list. General Note All security-related code changes are tagged so you can easily look them up in our review system.