Breaking: #88681 - Import of PHP files in Import/Export files removed¶
Importing XML data via EXT:impexp previously allowed to import PHP files for Administrators in TYPO3 Backend. This by-pass functionality is removed, and the configured File Deny Pattern now applies for all imports in order to streamline import functionality with other file operations within TYPO3 Core.
Importing XML files with embedded PHP files via EXT:impexp will trigger an import error and disallow the import of the file.
Any TYPO3 installations using the data importer that use import files with included PHP files.
Ensure to include PHP files into a custom local extension, as importing PHP code is highly discouraged - even for administrators.