Is Post Grid Blocks & Templates for News, Magazin… safe? Known vulnerabilities and latest version

The Post Grid Gutenberg Blocks – PostX plugin for WordPress is vulnerable to Stored Cross-Site Scripting via display_name User Field in all versions up to, and including, 5.1.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. WordPress core's pre_user_display_name filter encodes &, <, and > but leaves double-quotes intact (ENT_NOQUOTES), allowing a Subscriber-level user to store a double-quote in their display_name via /wp-admin/profile.php that subsequently breaks out of the alt="" attribute at Archive_Title.php:144.

The Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'inputPlaceHolder' parameter in all versions up to, and including, 5.0.13 due to insufficient input sanitization and output escaping. 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.

The Post Grid Gutenberg Blocks – PostX plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'searchnoresult' Block Attribute in all versions up to, and including, 5.0.32 due to insufficient input sanitization and output escaping. 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. This is particularly concerning in a cross-privilege scenario where a Contributor creates a pending or draft post containing the malicious block attribute, which then executes arbitrary JavaScript in the browser session of an Editor or Administrator who previews that post.

The Ultimate Post plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'moreResultsText' block attribute of the ultimate-post/advanced-search block in versions up to and including 5.0.31. This is due to insufficient input sanitization and output escaping in the Advanced_Search::content() render callback: the attribute value is filtered with wp_kses(), which strips disallowed HTML tags but does NOT escape HTML special characters such as double quotes in plain text, and the result is then concatenated directly into the data-viewmoretext HTML attribute without esc_attr(). 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.

The Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the ultp_shareCount_callback() function in all versions up to, and including, 5.0.5. This makes it possible for unauthenticated attackers to modify the share_count post meta for any post, including private or draft posts.

The Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 5.0.8 via the `/ultp/v3/starter_dummy_post/` and `/ultp/v3/starter_import_content/` REST API endpoints. This makes it possible for authenticated attackers, with Administrator-level access and above, to make web requests to arbitrary locations originating from the web application and can be used to query and modify information from internal services.

Missing Authorization vulnerability in WPXPO PostX ultimate-post allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects PostX: from n/a through <= 5.0.3.

Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in WPXPO PostX ultimate-post allows Retrieve Embedded Sensitive Data.This issue affects PostX: from n/a through <= 5.0.3.

The Post Grid Gutenberg Blocks for News, Magazines, Blog Websites – PostX plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the '/ultp/v2/get_dynamic_content/' REST API endpoint in all versions up to, and including, 5.0.3. This makes it possible for unauthenticated attackers to retrieve sensitive user metadata, including password hashes.

Missing Authorization vulnerability in WPXPO PostX ultimate-post allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects PostX: from n/a through <= 4.1.36.

Incorrect Privilege Assignment vulnerability in WPXPO PostX ultimate-post allows Privilege Escalation.This issue affects PostX: from n/a through <= 4.1.35.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPXPO PostX ultimate-post allows DOM-Based XSS.This issue affects PostX: from n/a through <= 4.1.25.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPXPO PostX ultimate-post.This issue affects PostX: from n/a through <= 4.1.15.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPXPO PostX ultimate-post allows Stored XSS.This issue affects PostX: from n/a through <= 4.1.15.

The Post Grid Gutenberg Blocks and WordPress Blog Plugin – PostX plugin for WordPress is vulnerable to unauthorized plugin installation/activation due to a missing capability check on the 'install_required_plugin_callback' function in all versions up to, and including, 4.1.16. This makes it possible for authenticated attackers, with Subscriber-level access and above, to install and activate arbitrary plugins which can be leveraged to achieve remote code execution if another vulnerable plugin is installed and activated.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPXPO PostX ultimate-post.This issue affects PostX: from n/a through <= 4.1.12.

Missing Authorization vulnerability in WPXPO PostX ultimate-post allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects PostX: from n/a through <= 3.2.3.

The Post Grid Gutenberg Blocks and WordPress Blog Plugin – PostX plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'postx_presets_callback' function in all versions up to, and including, 4.1.2. This makes it possible for authenticated attackers, with Contributor-level access and above, to change arbitrary options on affected sites. This can be used to enable new user registration and set the default role for new users to Administrator.

The Post Grid Gutenberg Blocks and WordPress Blog Plugin – PostX plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's file uploading feature in all versions up to, and including, 4.1.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPXPO PostX ultimate-post allows DOM-Based XSS.This issue affects PostX: from n/a through <= 4.0.1.

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in wpxpo PostX – Gutenberg Post Grid Blocks plugin <= 2.9.9 versions.