CVE-2026-4245

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.

CVSS 3.1

4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS

0.4% chance of exploitation in the next 30 days; higher than 32% of CVEs (scores of 2026-10-25)

CWE

CWE-863

Published

2026-08-22

Modified

2026-10-12

Record from

the NVD, synced 2026-10-19

References

• https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L520
• https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L624
• https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L635
• https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L740
• https://plugins.trac.wordpress.org/changeset/3485579/

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