CVE-2026-15305: Typo3 Early Validator Registration
A validator is being registered or created inside the `initializeFormElement()` lifecycle hook. At this stage in the TYPO3 Form lifecycle, concrete form definition properties (such as `allowedMimeTypes`) have not yet been applied. This causes the validator to use default or incomplete data, completely bypassing intended security restrictions like server-side
PHPgreprules fetch cve-2026-15305-typo3-early-validator-registration --engine opengrepDescription
A validator is being registered or created inside the `initializeFormElement()` lifecycle hook. At this stage in the TYPO3 Form lifecycle, concrete form definition properties (such as `allowedMimeTypes`) have not yet been applied. This causes the validator to use default or incomplete data, completely bypassing intended security restrictions like server-side
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