Impact

Some private posts, which were previously public, can result in unauthenticated disclosure under a specific set of conditions.

Patches

This has been patched in WordPress 5.4.1, along with all the previously affected versions via a minor release. Automatic updates are enabled by default for minor releases and we strongly recommend that you keep them enabled.

For more information

If you have any questions or comments about this advisory:

• Open an issue on HackerOne