CVE-2026-4245

Summary

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.

Affected Software

Weaknesses

• CWE-863: CWE-863 Incorrect Authorization

References

• https://www.wordfence.com/threat-intel/vulnerabilities/id/bb671c8f-9e14-4f79-adfa-72f48ec02449?source=cve
• 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#L635
• https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L740
• https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L624
• https://plugins.trac.wordpress.org/changeset/3485579/

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