[wp-trac] [WordPress Trac] #40175: Upload Validation / MIME Handling

[WordPress Trac]

#40175: Upload Validation / MIME Handling
-------------------------------------------------+-------------------------
 Reporter:  blobfolio                            |       Owner:  (none)
     Type:  defect (bug)                         |      Status:  assigned
 Priority:  high                                 |   Milestone:  Future
                                                 |  Release
Component:  Media                                |     Version:  4.7.3
 Severity:  major                                |  Resolution:
 Keywords:  has-unit-tests early needs-dev-note  |     Focuses:
                                                 |  administration
-------------------------------------------------+-------------------------

Comment (by PerS):

 My temporary fix is:

 {{{#!php
 <?php
 add_filter( 'wp_check_filetype_and_ext', function(
 $wp_check_filetype_and_ext, $file, $filename, $mimes, $real_mime ) {
         if ( ! empty( $wp_check_filetype_and_ext['ext'] ) ) {
                 return $wp_check_filetype_and_ext;
         }

         $allowed_mime_types = get_allowed_mime_types();
         /**
          * HACK: Replace mime type 'application/CDFV2[-*]' with the
 correct, if allowed, mime type.
          */
         if ( false !== strpos( $real_mime, 'application/CDFV2' ) ) {
                 $ext = end( explode( '.', basename( $filename ) ) );
                 if ( isset( $allowed_mime_types, $allowed_mime_types[ $ext
 ] ) ) {
                         $wp_check_filetype_and_ext = [
                                 'ext'  => $ext,
                                 'type' => $allowed_mime_types[ $ext ],
                         ];
                 }
         }

         return $wp_check_filetype_and_ext;
 }, 10, 5 );
 }}}

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/40175#comment:79>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform