AC-9509: Scheduled operation improvements

Author: sreenia806

lib/internal/Magento/Framework/Filesystem/Directory/PathValidator.php

@@ -54,8 +54,11 @@ public function validate(
             $actualPath = $this->driver->getRealPathSafety($path);
         }
 
-        if (mb_strpos($actualPath, $realDirectoryPath) !== 0
-            && rtrim($path, DIRECTORY_SEPARATOR) !== $realDirectoryPath
+        if (preg_match('/(?:^-|\s-)/', $path)
+            || (
+                mb_strpos($actualPath, $realDirectoryPath) !== 0
+                && rtrim($path, DIRECTORY_SEPARATOR) !== $realDirectoryPath
+            )
         ) {
             throw new ValidatorException(
                 new Phrase(