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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products
metaphorcreations:post duplicator
References 6
https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.p…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.p…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.p…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.p…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset/3485579/
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/bb671c8f-9e14-4f79-ad…
security@wordfence.com