WordPress 5.4.2 has been released

This security and maintenance release features 22 fixes and enhancements. Plus, it adds a number of security fixes—see the list below.

These bugs affect WordPress versions 5.4.1 and earlier; version 5.4.2 fixes them, so you’ll want to upgrade.

If you haven’t yet updated to 5.4, there are also updated versions of 5.3 and earlier that fix the bugs for you.

Security Updates

WordPress versions 5.4 and earlier are affected by the following bugs, which are fixed in version 5.4.2. If you haven’t yet updated to 5.4, there are also updated versions of 5.3 and earlier that fix the security issues.

• An XSS issue where authenticated users with low privileges are able to add JavaScript to posts in the block editor.
• An XSS issue where authenticated users with upload permissions are able to add JavaScript to media files.
• An open redirect issue in wp_validate_redirect().
• An authenticated XSS issue via theme uploads.
• An issue where set-screen-option can be misused by plugins leading to privilege escalation.
• An issue where comments from password-protected posts and pages could be displayed under certain conditions.

One maintenance update was also deployed to versions 5.1, 5.2 and 5.3. See the related developer note for more information.

You can browse the full list of changes on Trac.

For more info, browse the full list of changes on Trac or check out the Version 5.4.2 documentation page.

WordPress 5.4.2 is a short-cycle maintenance release. The next major release will be version 5.5.

You can download WordPress 5.4.2 from the button at the top of this page, or visit your Dashboard → Updates and click Update Now.

If you have sites that support automatic background updates, they’ve already started the update process.