CVE-2026-4244 Missing authorization in Post Duplicator
Authenticated contributors can duplicate posts and attribute them to any user, including administrators, due to missing capability checks.
- 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-2026-4244?
CVE-2026-4244 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 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-4244?
How do I fix CVE-2026-4244?
No fix has been published for CVE-2026-4244 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-2026-4244 being exploited?
There is no known exploitation of CVE-2026-4244 in the wild and no public exploit code.
Sources
Also known as GHSA-4vhq-hx4h-m998.