The Easy Social Feed WordPress plugin before 6.5.6 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admin

WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. ### Impact The issue allows an authenticated but low-privileged user (like contributor/author) to execute XSS in the editor. This bypasses the restrictions imposed on users who do not have the permission to post `unfiltered_html`. ### Patches This has been patched in WordPress 5.8, and will be pushed to older versions via minor releases (automatic updates). It's strongly recommended that you keep auto-updates enabled to receive the fix. ### References https://wordpress.org/news/category/releases/ https://hackerone.com/reports/1142140 ### For more information If you have any questions or comments about this advisory: * Open an issue in [HackerOne](https://hackerone.com/wordpress)

WordPress is a free and open-source content management system written in PHP and paired with a MySQL or MariaDB database. In affected versions the widgets editor introduced in WordPress 5.8 beta 1 has improper handling of HTML input in the Custom HTML feature. This leads to stored XSS in the custom HTML widget. This has been patched in WordPress 5.8. It was only present during the testing/beta phase of WordPress 5.8.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Cusmin AGCA - Absolutely Glamorous Custom Admin (WordPress plugin) allows Stored XSS.This issue affects AGCA - Absolutely Glamorous Custom Admin (WordPress plugin): from n/a through 6.8.

Multiple cross-site scripting (XSS) vulnerabilities in wp-contact-form/options-contactform.php in the WP-ContactForm 1.5 alpha and earlier plugin for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) wpcf_email, (2) wpcf_subject, (3) wpcf_question, (4) wpcf_answer, (5) wpcf_success_msg, (6) wpcf_error_msg, or (7) wpcf_msg parameter to wp-admin/admin.php, or (8) the SRC attribute of an IFRAME element.

WordPress before 5.2.4 is vulnerable to stored XSS (cross-site scripting) via the Customizer.

In WordPress before 5.3.1, authenticated users with lower privileges (like contributors) can inject JavaScript code in the block editor, which is executed within the dashboard. It can lead to an admin opening the affected post in the editor leading to XSS.

WordPress users with lower privileges (like contributors) can inject JavaScript code in the block editor using a specific payload, which is executed within the dashboard. This can lead to XSS if an admin opens the post in the editor. Execution of this attack does require an authenticated user. This has been patched in WordPress 5.3.1, along with all the previous WordPress versions from 3.7 to 5.3 via a minor release. Automatic updates are enabled by default for minor releases and we strongly recommend that you keep them enabled.

The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'tutor_instructor_list' shortcode in all versions up to, and including, 2.6.2 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Cross-site scripting (XSS) vulnerability in js/ta_loaded.js.php in the Traffic Analyzer plugin, possibly 3.3.2 and earlier, for WordPress allows remote attackers to inject arbitrary web script or HTML via the aoid parameter.

Cross-site scripting (XSS) vulnerability in Plupload.as in Moxiecode plupload before 1.5.5, as used in WordPress before 3.5.1 and other products, allows remote attackers to inject arbitrary web script or HTML via the id parameter.

Cross-site scripting (XSS) vulnerability in the Uk Cookie (aka uk-cookie) plugin for WordPress allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

WordPress before 4.9.2 has XSS in the Flash fallback files in MediaElement (under wp-includes/js/mediaelement).

Cross-site scripting (XSS) vulnerability in wassup.php in the WassUp plugin before 1.8.3.1 for WordPress allows remote attackers to inject arbitrary web script or HTML via the User-Agent HTTP header.

In WordPress before 4.9.9 and 5.x before 5.0.1, crafted URLs could trigger XSS for certain use cases involving plugins.

In WordPress before 4.9.9 and 5.x before 5.0.1, when the Apache HTTP Server is used, authors could upload crafted files that bypass intended MIME type restrictions, leading to XSS, as demonstrated by a .jpg file without JPEG data.

Multiple cross-site scripting (XSS) vulnerabilities in wp-admin/setup-config.php in the installation component in WordPress 3.3.1 and earlier allow remote attackers to inject arbitrary web script or HTML via the (1) dbhost, (2) dbname, or (3) uname parameter. NOTE: the vendor disputes the significance of this issue; also, it is unclear whether this specific XSS scenario has security relevance

Cross-site scripting (XSS) vulnerability in the column_title function in wp-admin/includes/class-wp-media-list-table.php in WordPress before 4.5.3 allows remote attackers to inject arbitrary web script or HTML via a crafted attachment name, a different vulnerability than CVE-2016-5834.

Cross-site scripting (XSS) vulnerability in the network settings page in WordPress before 4.5 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Cross-site scripting (XSS) vulnerability in plupload.flash.swf in Plupload before 2.1.9, as used in WordPress before 4.5.2, allows remote attackers to inject arbitrary web script or HTML via a Same-Origin Method Execution (SOME) attack.

The Sina Extension for Elementor (Slider, Gallery, Form, Modal, Data Table, Tab, Particle, Free Elementor Widgets & Elementor Templates) plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's Sina Fancy Text Widget in all versions up to, and including, 3.5.2 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Multiple cross-site scripting (XSS) vulnerabilities in wp-includes/class-wp-theme.php in WordPress before 4.4.1 allow remote attackers to inject arbitrary web script or HTML via a (1) stylesheet name or (2) template name to wp-admin/customize.php.

Cross-site scripting (XSS) vulnerability in wp-includes/wp-db.php in WordPress before 4.2.2 allows remote attackers to inject arbitrary web script or HTML via a long comment that is improperly stored because of limitations on the MySQL TEXT data type. NOTE: this vulnerability exists because of an incomplete fix for CVE-2015-3440.

wp-includes/general-template.php in WordPress before 4.9.1 does not properly restrict the lang attribute of an HTML element, which might allow attackers to conduct XSS attacks via the language setting of a site.

wp-includes/feed.php in WordPress before 4.9.1 does not properly restrict enclosures in RSS and Atom fields, which might allow attackers to conduct XSS attacks via a crafted URL.

Cross-site scripting (XSS) vulnerability in the form function in the WP_Nav_Menu_Widget class in wp-includes/default-widgets.php in WordPress before 4.2.4 allows remote attackers to inject arbitrary web script or HTML via a widget title.

Cross-site scripting (XSS) vulnerability in WordPress before 4.3.1 allows remote attackers to inject arbitrary web script or HTML by leveraging the mishandling of unclosed HTML elements during processing of shortcode tags.

Cross-site scripting (XSS) vulnerability in the refreshAdvancedAccessibilityOfItem function in wp-admin/js/nav-menu.js in WordPress before 4.2.4 allows remote attackers to inject arbitrary web script or HTML via an accessibility-helper title.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Marco Gasi Language Switcher for Transposh allows Reflected XSS.This issue affects Language Switcher for Transposh: from n/a through 1.5.9.

Cross-site scripting (XSS) vulnerability in wp-includes/wp-db.php in WordPress before 4.2.1 allows remote attackers to inject arbitrary web script or HTML via a long comment that is improperly stored because of limitations on the MySQL TEXT data type.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in The CSSIgniter Team Elements Plus! allows Stored XSS.This issue affects Elements Plus!: from n/a through 2.16.3.

The WP Recipe Maker plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's wprm-recipe-roundup-item shortcode in all versions up to, and including, 9.3.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Cross-site scripting (XSS) vulnerability in the Elegant Grunge theme before 1.0.4 for WordPress allows remote attackers to inject arbitrary web script or HTML via the s parameter.

WordPress is a free and open-source content management system written in PHP and paired with a MariaDB database. Low-privileged authenticated users (like author) in WordPress core are able to execute JavaScript/perform stored XSS attack, which can affect high-privileged users. This has been patched in WordPress version 5.8.3. Older affected versions are also fixed via security release, that go back till 3.7.37. We strongly recommend that you keep auto-updates enabled. There are no known workarounds for this issue.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kailey Lampert Mini Loops allows Stored XSS.This issue affects Mini Loops: from n/a through 1.4.1.

A vulnerability classified as problematic was found in Thimo Grauerholz WP-Spreadplugin up to 3.8.6.1 on WordPress. This vulnerability affects unknown code of the file spreadplugin.php. The manipulation of the argument Spreadplugin leads to cross site scripting. The attack can be initiated remotely. Upgrading to version 3.8.6.6 is able to address this issue. The name of the patch is a9b9afc641854698e80aa5dd9ababfc8e0e57d69. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-261676.

Cross-site scripting (XSS) vulnerability in the wptexturize function in WordPress before 3.7.5, 3.8.x before 3.8.5, and 3.9.x before 3.9.3 allows remote attackers to inject arbitrary web script or HTML via crafted use of shortcode brackets in a text field, as demonstrated by a comment or a post.

Cross-site scripting (XSS) vulnerability in WordPress before 3.7.5, 3.8.x before 3.8.5, 3.9.x before 3.9.3, and 4.x before 4.0.1 allows remote attackers to inject arbitrary web script or HTML via a crafted Cascading Style Sheets (CSS) token sequence in a post.

Cross-site scripting (XSS) vulnerability in the media-playlists feature in WordPress before 3.9.x before 3.9.3 and 4.x before 4.0.1 allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Multiple cross-site scripting (XSS) vulnerabilities in contact/edit.php in the WP Ultimate Email Marketer plugin 1.1.0 and earlier for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) listname or (2) contact parameter.

Cross-site scripting (XSS) vulnerability in fpg_preview.php in the Flash Photo Gallery plugin 0.7 and earlier for WordPress allows remote attackers to inject arbitrary web script or HTML via the path parameter.

Cross-site scripting (XSS) vulnerability in wp-includes/pluggable.php in WordPress before 3.9.2, when Multisite is enabled, allows remote authenticated administrators to inject arbitrary web script or HTML, and obtain Super Admin privileges, via a crafted avatar URL.

Multiple cross-site scripting (XSS) vulnerabilities in videoplayer/autoplay.php in the HTML5 Video Player with Playlist plugin 2.4.0 and earlier for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) theme or (2) playlistmod parameter.

Cross-site scripting (XSS) vulnerability in the Contact Bank plugin before 2.0.20 for WordPress allows remote attackers to inject arbitrary web script or HTML via the Label field, related to form layout configuration. NOTE: some of these details are obtained from third party information.

Cross-site scripting (XSS) vulnerability in the BuddyPress plugin before 1.9.2 for WordPress allows remote authenticated users to inject arbitrary web script or HTML via the name field to groups/create/step/group-details. NOTE: this can be exploited without authentication by leveraging CVE-2014-1889.

Multiple cross-site scripting (XSS) vulnerabilities in the Thank You Counter Button plugin 1.8.7 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) thanks_caption, (2) thanks_caption_style, or (3) thanks_style parameter to wp-admin/options.php.

Cross-site scripting (XSS) vulnerability in the Foliopress WYSIWYG plugin before 2.6.8.5 for WordPress allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.

Before version 4.8.2, WordPress was vulnerable to cross-site scripting in oEmbed discovery.

Cross-site scripting (XSS) vulnerability in the F8 Lite theme before 4.2.2 for WordPress allows remote attackers to inject arbitrary web script or HTML via the s parameter.