CVE-2026-4245 Post Duplicator <= 3.0.11 - Authorization Bypass to Authenticated (Contributor+) Post Duplication
Authenticated contributors can bypass editorial review to publish scheduled or private posts and duplicate restricted post types in the Post Duplicator plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4245?
CVE-2026-4245 is a medium-severity missing authorization vulnerability in metaphorcreations Post Duplicator, published on 22 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-863
Which versions are affected by CVE-2026-4245?
How do I fix CVE-2026-4245?
No fix has been published for CVE-2026-4245 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-4245 being exploited?
There is no known exploitation of CVE-2026-4245 in the wild and no public exploit code.
Sources
Also known as GHSA-53vg-j9w4-c9v9.