WordPress Release: 4.7.23

TL;DR

WordPress 4.7.23 is a security and maintenance release that updates the jQuery.query library from version 2.1.7 to 2.2.3. This update addresses potential security vulnerabilities in the jQuery.query library, which is used for URL parameter handling in WordPress. While this is a minor update, it's important for maintaining the security of WordPress installations running on the 4.7 branch.

Highlight of the Release

• Updated jQuery.query library from version 2.1.7 to 2.2.3
• Security improvements through third-party library update
• Maintenance release for WordPress 4.7 branch

Migration Guide

No migration steps are required for this update. The jQuery.query library update is handled internally by WordPress and should not affect normal site functionality.

For developers who directly use the jQuery.query library in their custom code:

• Review the changes between jQuery.query 2.1.7 and 2.2.3
• Test any functionality that relies on URL parameter handling
• Ensure your code is compatible with the updated library version

Upgrade Recommendations

This update is highly recommended for all WordPress 4.7 installations as it addresses security vulnerabilities in a core JavaScript library.

While WordPress 4.7 is an older branch and no longer receives regular updates, sites still running this version should apply this security update immediately. However, for optimal security and features, upgrading to the latest WordPress major version is strongly advised.

The update process follows the standard WordPress update procedure and should not cause any disruption to your website's functionality.

Bug Fixes

This release primarily addresses potential security vulnerabilities in the jQuery.query library by updating it to version 2.2.3. While not explicitly mentioned in the commit messages, jQuery library updates typically include bug fixes for issues such as:

• Improved handling of URL parameters
• Fixed edge cases in query string parsing
• Resolved potential memory leaks
• Improved compatibility with modern browsers

New Features

No new features were introduced in this maintenance release. WordPress 4.7.23 focuses solely on updating the jQuery.query library to address security concerns.

Security Updates

This release updates the jQuery.query library from version 2.1.7 to 2.2.3, which likely addresses security vulnerabilities related to:

• URL parameter handling and parsing
• Potential XSS (Cross-Site Scripting) vulnerabilities
• Query string manipulation security issues

While specific security vulnerabilities are not detailed in the commit messages, updates to JavaScript libraries like jQuery and its plugins are often made to address known security issues.

Performance Improvements

No specific performance improvements were mentioned in the release notes. The jQuery.query library update was primarily focused on security rather than performance enhancements.

Impact Summary

WordPress 4.7.23 is a targeted security update that addresses potential vulnerabilities in the jQuery.query library by updating it from version 2.1.7 to 2.2.3. This update is part of WordPress's ongoing commitment to security maintenance, even for older branches.

The impact of this update is minimal for most users, with no visible changes to functionality or the user interface. The primary benefit is improved security for sites still running on the WordPress 4.7 branch. No breaking changes are expected from this library update.

It's worth noting that WordPress 4.7 is an older branch, and while security updates like this are important, sites should ideally be running on more recent WordPress versions that receive regular feature and security updates.