WordPress · Post Duplicator · CVE-2026-4244
**Name of the Vulnerable Software and Affected Versions**
Post Duplicator versions prior to 3.0.12
**Description**
The Post Duplicator plugin for WordPress allows unauthorized modification of data because the `duplicate post()` function fails to verify if a user possesses the `edit others posts` capability. This flaw occurs when the function processes the `selectedAuthorId` parameter via the `duplicate-post` REST endpoint. Consequently, authenticated users with Contributor-level access or higher can create duplicated posts attributed to any user, including administrators.
**Recommendations**
Update the plugin to a version newer than 3.0.11.
As a temporary mitigation, restrict access to the `duplicate-post` REST endpoint or limit user permissions to prevent Contributor-level accounts from triggering the `duplicate post()` function.