Version 5.3.1

On December 12, 2019, WordPress 5.3.1 was released to the public.

Installation/Update Information Installation/Update Information

To download WordPress 5.3.1, update automatically from the Dashboard > Updates menu in your site’s admin area or visit http://wp101.net/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:

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Summary Summary

Security updates Security updates

From the WordPress 5.3.1 release post, WordPress versions 5.3 and earlier are affected by the following bugs, which are fixed in version 5.3.1. Updated versions of WordPress 5.2 and older releases since WordPress 3.7 are also available, for users who have not yet updated to 5.3.

  • Props to Daniel Bachhuber for finding an issue where an unprivileged user could make a post sticky via the REST API.
  • Props to Simon Scannell of RIPS Technologies for finding and disclosing an issue where cross-site scripting (XSS) could be stored in well-crafted links.
  • Props to the WordPress.org Security Team for hardening wp_kses_bad_protocol() to ensure that it is aware of the named colon attribute.
  • Props to Nguyen The Duc for discovering a stored XSS vulnerability using block editor content.

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Maintenance updates Maintenance updates

Here are a few of the highlights:

  • Administration: improvements to admin form controls height and alignment standardization (see related dev note), dashboard widget links accessibility and alternate color scheme readability issues (see related dev note).
  • Block editor: fix Edge scrolling issues and intermittent JavaScript issues.
  • Bundled themes: add customizer option to show/hide author bio, replace JS based smooth scroll with CSS (see related dev note) and fix Instagram embed CSS.
  • Date/time: improve non-GMT dates calculation, fix date format output in specific languages and make get_permalink() more resilient against PHP timezone changes.
  • Embeds: remove CollegeHumor oEmbed provider as the service doesn’t exist anymore.
  • External libraries: update sodium_compat.
  • Site health: allow the remind interval for the admin email verification to be filtered.
  • Uploads: avoid thumbnails overwriting other uploads when filename matches, and exclude PNG images from scaling after upload.
  • Users: ensure administration email verification uses the user’s locale instead of the site locale.

For more information, browse the full list of changes on Trac or check out the version 5.3.1 HelpHub documentation page.

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Developer notes Developer notes

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List of Files Revised List of Files Revised

src/js/_enqueues/lib/admin-bar.js
src/js/_enqueues/wp/widgets/media.js
src/js/media/views/settings.js
src/wp-admin/css/about.css
src/wp-admin/css/color-picker.css
src/wp-admin/css/colors/_admin.scss
src/wp-admin/css/colors/_mixins.scss
src/wp-admin/css/colors/_variables.scss
src/wp-admin/css/common.css
src/wp-admin/css/customize-controls.css
src/wp-admin/css/dashboard.css
src/wp-admin/css/edit.css
src/wp-admin/css/forms.css
src/wp-admin/css/install.css
src/wp-admin/css/list-tables.css
src/wp-admin/css/media.css
src/wp-admin/css/themes.css
src/wp-admin/includes/class-walker-nav-menu-checklist.php
src/wp-admin/includes/class-wp-list-table.php
src/wp-admin/includes/class-wp-site-health.php
src/wp-admin/includes/credits.php
src/wp-admin/includes/dashboard.php
src/wp-admin/includes/image.php
src/wp-admin/includes/nav-menu.php
src/wp-admin/includes/plugin.php
src/wp-admin/user-edit.php
src/wp-content/themes/twentytwenty/assets/js/color-calculations.js
src/wp-content/themes/twentytwenty/assets/js/index.js
src/wp-content/themes/twentytwenty/classes/class-twentytwenty-customize.php
src/wp-content/themes/twentytwenty/classes/class-twentytwenty-non-latin-languages.php
src/wp-content/themes/twentytwenty/footer.php
src/wp-content/themes/twentytwenty/inc/template-tags.php
src/wp-content/themes/twentytwenty/style-rtl.css
src/wp-content/themes/twentytwenty/style.css
src/wp-content/themes/twentytwenty/template-parts/entry-author-bio.php
src/wp-includes/class-wp-oembed.php
src/wp-includes/class-wp-xmlrpc-server.php
src/wp-includes/comment-template.php
src/wp-includes/css/buttons.css
src/wp-includes/css/editor.css
src/wp-includes/css/media-views.css
src/wp-includes/feed.php
src/wp-includes/functions.php
src/wp-includes/kses.php
src/wp-includes/link-template.php
src/wp-includes/media-template.php
src/wp-includes/media.php
src/wp-includes/option.php
src/wp-includes/script-loader.php
src/wp-includes/sodium_compat/LICENSE
src/wp-includes/sodium_compat/autoload.php
src/wp-includes/sodium_compat/composer.json
src/wp-includes/sodium_compat/lib/constants.php
src/wp-includes/sodium_compat/lib/namespaced.php
src/wp-includes/sodium_compat/lib/php72compat.php
src/wp-includes/sodium_compat/lib/php72compat_const.php
src/wp-includes/sodium_compat/lib/sodium_compat.php
src/wp-includes/sodium_compat/src/Compat.php
src/wp-includes/sodium_compat/src/Core/BLAKE2b.php
src/wp-includes/sodium_compat/src/Core/Base64/Common.php
src/wp-includes/sodium_compat/src/Core/Base64/Original.php
src/wp-includes/sodium_compat/src/Core/Base64/UrlSafe.php
src/wp-includes/sodium_compat/src/Core/Ed25519.php
src/wp-includes/sodium_compat/src/Core/Poly1305/State.php
src/wp-includes/sodium_compat/src/Core/SecretStream/State.php
src/wp-includes/sodium_compat/src/Core/XChaCha20.php
src/wp-includes/sodium_compat/src/Core32/BLAKE2b.php
src/wp-includes/sodium_compat/src/Core32/Ed25519.php
src/wp-includes/sodium_compat/src/Core32/Poly1305/State.php
src/wp-includes/sodium_compat/src/Core32/SecretStream/State.php
src/wp-includes/sodium_compat/src/Core32/X25519.php
src/wp-includes/sodium_compat/src/Crypto.php
src/wp-includes/sodium_compat/src/Crypto32.php
src/wp-includes/sodium_compat/src/File.php
src/wp-includes/sodium_compat/src/PHP52/SplFixedArray.php
src/wp-includes/version.php
src/wp-login.php

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Updated packages Updated packages

@wordpress/block-editor@3.2.5
@wordpress/block-library@2.9.6
@wordpress/core-data@2.7.5
@wordpress/edit-post@3.8.6
@wordpress/editor@9.7.6
@wordpress/format-library@1.9.5
jquery-hoverintent@1.8.3
hoverintent@2.2.1