On October 17, 2022, WordPress 5.9.4 was released to the public.
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
The security team would like to thank the following people for responsibly reporting vulnerabilities, and allowing them to be fixed in this release.
- Stored XSS via wp-mail.php (post by email) – Toshitsugu Yoneyama of Mitsui Bussan Secure Directions, Inc. via JPCERT
- Open redirect in `wp_nonce_ays` – devrayn
- Sender’s email address is exposed in wp-mail.php – Toshitsugu Yoneyama of Mitsui Bussan Secure Directions, Inc. via JPCERT
- Media Library – Reflected XSS via SQLi – Ben Bidner from the WordPress security team and Marc Montpas from Automattic independently discovered this issue
- CSRF in wp-trackback.php – Simon Scannell
- Stored XSS via the Customizer – Alex Concha from the WordPress security team
- Revert shared user instances introduced in 50790 – Alex Concha and Ben Bidner from the WordPress security team
- Stored XSS in WordPress Core via Comment Editing – Third-party security audit and Alex Concha from the WordPress security team
- Data exposure via the REST Terms/Tags Endpoint – Than Taintor
- Content from multipart emails leaked – Thomas Kräftner
- SQL Injection due to improper sanitization in `WP_Date_Query` – Michael Mazzolini
- RSS Widget: Stored XSS issue – Third-party security audit
- Stored XSS in the search block – Alex Concha of the WP Security team
- Feature Image Block: XSS issue – Third-party security audit
- RSS Block: Stored XSS issue – Third-party security audit
- Fix widget block XSS – Third-party security audit
The release would not have been possible without the contributions of the following people. Their asynchronous coordination to deliver several fixes into a stable release is a testament to the power and capability of the WordPress community.
@audrasjb, @costdev, @cu121, @dd32, @davidbaumwald, @ehtis, @johnbillion, @johnjamesjacoby, @martinkrcho, @matveb, @oztaser, @paulkevan, @peterwilsoncc,@ravipatel, @SergeyBiryukov, @talldanwp, @timothyblynjacobs, @tykoted, @voldemortensen, @vortfu, and @xknown.