WordPress Core 6.0.3 Security Release

On October 17, 2022, the WordPress core team released WordPress version 6.0.3, which contains patches for a total of 16 vulnerabilities, including SQL injection, stored XSS, open redirect, data exposure and cross-site request forgery vulnerabilities. The good news is that most of these are low in severity or require a highly privileged user account or additional vulnerable code in order to exploit. Anyway because this is a security release, it is recommended that you update your sites immediately. All versions since WordPress 3.7 have also been updated. Note, that in order to avoid web site crashes and to assure timely security updates it is best to use our WordPress Maintenance Service.

Detailed List of Vulnerabilities

1. Stored XSS via wp-mail.php (post by email) – Toshitsugu Yoneyama of Mitsui Bussan Secure Directions, Inc. via JPCERT
2. Open redirect in “wp_nonce_ays” – devrayn
3. Sender’s email address is exposed in wp-mail.php – Toshitsugu Yoneyama of Mitsui Bussan Secure Directions, Inc. via JPCERT
4. Media Library – Reflected XSS via SQLi – Ben Bidner from the WordPress security team and Marc Montpas from Automattic independently discovered this issue
5. CSRF in wp-trackback.php – Simon Scannell
6. Stored XSS via the Customizer – Alex Concha from the WordPress security team
7. Revert shared user instances introduced in 50790 – Alex Concha and Ben Bidner from the WordPress security team
8. Stored XSS in WordPress Core via Comment Editing – Third-party security audit and Alex Concha from the WordPress security team
9. Data exposure via the REST Terms/Tags Endpoint – Than Taintor
10. Content from multipart emails leaked – Thomas Kräftner
11. SQL Injection due to improper sanitization in “WP_Date_Query” – Michael Mazzolini
12. RSS Widget: Stored XSS issue – Third-party security audit
13. Stored XSS in the search block – Alex Concha of the WP Security team
14. Feature Image Block: XSS issue – Third-party security audit
15. RSS Block: Stored XSS issue – Third-party security audit
16. Fix widget block XSS – Third-party security audit

The Next Major Release

The next major release of WordPress comes in two weeks and will be version 6.1 – planned for November 1, 2022.