Metaphor Creations Post Duplicator Plugin up to 3.0.11 on WordPress Permission Callback/REST Endpoint duplicate_post_permissions authorization

Summaryinfo

A vulnerability marked as critical has been reported in Metaphor Creations Post Duplicator Plugin up to 3.0.11. Affected by this issue is the function duplicate_post_permissions of the component Permission Callback/REST Endpoint. The manipulation leads to authorization. This vulnerability is uniquely identified as CVE-2026-4245. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Metaphor Creations Post Duplicator Plugin up to 3.0.11. It has been rated as critical. This issue affects the function duplicate_post_permissions of the component Permission Callback/REST Endpoint. The manipulation with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-4245 since 03/15/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/22/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• Metaphor Creations

Name

• Post Duplicator Plugin

Version

• 3.0.0
• 3.0.1
• 3.0.2
• 3.0.3
• 3.0.4
• 3.0.5
• 3.0.6
• 3.0.7
• 3.0.8
• 3.0.9
• 3.0.10
• 3.0.11

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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