CVE-2026-15305 — TYPO3 CMS - Unrestricted File Upload in Form Framework
Users were able to upload files with arbitrary MIME types to forms using FileUpload or ImageUpload elements with allowedMimeTypes configured. The restriction was not enforced se…
Published: 2026-07-14 · CVSS: 6.3 · CVSS 4.0
Users were able to upload files with arbitrary MIME types to forms using FileUpload or ImageUpload elements with allowedMimeTypes configured. The restriction was not enforced server-side because the MimeTypeValidator was registered during form building before concrete form definition properties were applied, resulting in the validator never being added to the processing pipeline. This issue affects TYPO3 CMS versions 14.2.0-14.3.4.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7