[wp-trac] [WordPress Trac] #47564: Protect against recursive customizer navigation menu data

[WordPress Trac]

#47564: Protect against recursive customizer navigation menu data
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 Reporter:  donpark       |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Customize     |    Version:  trunk
 Severity:  normal        |   Keywords:  has-patch
  Focuses:                |
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 Recursive data can slip into navigation menu structure but client-script
 currently has no protection against, resulting in browser freezing when
 trying to edit navigation menus.

 Attached patch changes `getDepth()` to keep track of parent navigation
 menu item ID to avoid recursion.

 NOTE: This issue and patch may need an A12N to test because verifying this
 bug may be difficult and one known site with this problem needs access to
 MC to test with. If you are an A12N, I've created a WPCOM patch for
 testing purpose at D29638-code.

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Ticket URL: <https://core.trac.wordpress.org/ticket/47564>
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