Post Duplicator <= 3.0.11 - Authorization Bypass to Authenticated (Contributor+) Post Duplication

The Post Duplicator plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.0.11. This is due to the `duplicate_post_permissions()` permission callback only verifying the `duplicate_posts` capability without checking whether the requesting user holds `publish_posts` or other status-gated capabilities. This makes it possible for authenticated attackers, with Contributor-level access and above, to create duplicate posts with `future` (scheduled, auto-publishes) or `private` status, bypassing editorial review. Additionally, the REST endpoint does not enforce administrator-configured post-type duplication restrictions, allowing duplication of post types that have been explicitly disabled.

Post Duplicator <= 3.0.11 - Missing Authorization to Authenticated (Contributor+) Post Duplication with Arbitrary Author Attribution

The Post Duplicator plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `duplicate_post()` function in all versions up to, and including, 3.0.11. This is due to the function not verifying that the user has `edit_others_posts` capability before accepting a `selectedAuthorId` parameter via the `duplicate-post` REST endpoint. This makes it possible for authenticated attackers, with Contributor-level access and above, to create duplicated posts attributed to any user, including administrators.

WordPress Post Duplicator plugin <= 2.35 - Broken Access Control vulnerability

Missing Authorization vulnerability in metaphorcreations Post Duplicator post-duplicator allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Post Duplicator: from n/a through <= 2.35.

WordPress Post Duplicator plugin <= 3.0.10 - PHP Object Injection vulnerability

Contributor PHP Object Injection in Post Duplicator <= 3.0.10 versions.

WordPress Post Duplicator plugin <= 2.31 - Broken Access Control vulnerability

Missing Authorization vulnerability in Metaphor Creations Post Duplicator allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Post Duplicator: from n/a through 2.31.

Post Duplicator <= 3.0.8 - Missing Authorization to Authenticated (Contributor+) Protected Post Meta Insertion via 'customMetaData' Parameter

The Post Duplicator plugin for WordPress is vulnerable to unauthorized arbitrary protected post meta insertion in all versions up to, and including, 3.0.8. This is due to the `duplicate_post()` function in `includes/api.php` using `$wpdb->insert()` directly to the `wp_postmeta` table instead of WordPress's standard `add_post_meta()` function, which would call `is_protected_meta()` to prevent lower-privileged users from setting protected meta keys (those starting with `_`). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary protected post meta keys such as `_wp_page_template`, `_wp_attached_file`, and other sensitive meta keys on duplicated posts via the `customMetaData` JSON array parameter in the `/wp-json/post-duplicator/v1/duplicate-post` REST API endpoint.

Post Duplicator <= 2.36 - Authenticated (Contributor+) Protected Post Disclosure

The Post Duplicator plugin for WordPress is vulnerable to Information Exposure in all versions up to, and including, 2.36 via the mtphr_duplicate_post() function due to insufficient restrictions on which posts can be duplicated. This makes it possible for authenticated attackers, with Contributor-level access and above, to extract data from password protected, private, or draft posts that they should not have access to by duplicating the post.

A cross-site scripting (XSS) attack can cause arbitrary code (JavaScript) to run in a user's browser and can use an application as the vehicle for the attack. The XSS payload given in the "Duplicate Title" text box executes whenever the user opens the Settings Page of the Post Duplicator Plugin or the application root page after duplicating any of the existing posts.

meta4creations Post Duplicator Plugin notices.php mtphr_post_duplicator_notice cross site scripting

A vulnerability was found in meta4creations Post Duplicator Plugin 2.18 on WordPress. It has been classified as problematic. Affected is the function mtphr_post_duplicator_notice of the file includes/notices.php. The manipulation of the argument post-duplicated leads to cross site scripting. It is possible to launch the attack remotely. Upgrading to version 2.19 is able to address this issue. The name of the patch is ca67c05e490c0cf93a1e9b2d93bfeff3dd96f594. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-221496.