Software Update: WordPress 5.8.3

Version 5.8.3 of WordPress has been released. With this program, which is made available under a GPL license, it is possible to set up and maintain a website or blog. WordPress is easy to set up and can be up and running in under five minutes, provided a server with PHP and MySQL is already available. There are possibilities to further extend the functionality of WordPress with plugins and the look with themes to adjust. The release notes for this release can be found below:

WordPress 5.8.3 Security Release

This security release features four security fixes. 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. WordPress 5.8.3 is a short cycle security release. The next major release will be version 5.9, which is already in the Release Candidate stage.

You can update to WordPress 5.8.3 by downloading from WordPress.org or visiting your Dashboard → Updates and clicking Update Now. If you have sites that support automatic background updates, they’ve already started the update process.

Security Updates

Four security issues affect WordPress versions between 3.7 and 5.8. If you haven’t yet updated to 5.8, all WordPress versions since 3.7 have also been updated to fix the following security issue (except where noted otherwise):

• Props to Karim El Ouerghemmi and Simon Scannell of SonarSource for disclosing an issue with stored XSS through post slugs.
• Props to Simon Scannell of SonarSource for reporting an issue with Object injection in some multisite installations.
• Props to ngocnb and khuyenn from GiaoHangTietKiem JSC for working with Trend Micro Zero Day Initiative on reporting a SQL injection vulnerability in WP_Query.
• Props to Ben Bidner from the WordPress security team for reporting a SQL injection vulnerability in WP_Meta_Query (only relevant to versions 4.1-5.8).