Editor: Fix Path Traversal issue on Windows in Template-Part Block.

Merges [58470] to the 5.4 branch.
Props xknown, jorbin.




git-svn-id: https://develop.svn.wordpress.org/branches/5.4@58488 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Jb Audras 2024-06-24 15:35:29 +00:00
parent 6b3fd183cf
commit 84fb4dd848

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@ -5296,6 +5296,9 @@ function iis7_supports_permalinks() {
* @return int 0 means nothing is wrong, greater than 0 means something was wrong.
*/
function validate_file( $file, $allowed_files = array() ) {
// Normalize path for Windows servers
$file = wp_normalize_path( $file );
// `../` on its own is not allowed:
if ( '../' === $file ) {
return 1;