On May 12, 2021, WordPress 5.5.5 was released to the public.
Installation/Update Information
To get this version, update automatically from the Dashboard > Updates menu in your site’s admin area or visit https://wordpress.org/download/release-archive/.
For step-by-step instructions on installing and updating WordPress:
If you are new to WordPress, we recommend that you begin with the following:
- New To WordPress – Where to Start
- First Steps With WordPress or Upgrading WordPress Extended
- WordPress Lessons
Summary
Security updates
One security issue affects WordPress versions between 3.7 and 5.7. If you haven’t yet updated to 5.7, all WordPress versions since 3.7 have also been updated to fix the following security issues:
- Object injection in PHPMailer, CVE-2020-36326 and CVE-2018-19296.
This version of WordPress was led by @peterwilsoncc and @audrasjb.
Props to @audrasjb, @ayeshrajans, @desrosj, @peterwilsoncc, @SergeyBiryukov and @xknown for their work on the security issue.
For more information, browse the full list of changes on Trac.
List of Files Revised
wp-admin/about.php wp-includes/PHPMailer/PHPMailer.php
Updated packages
No package was updated.