What’s Vulnerable › Vulnerabilities

CVE-2026-4245: Post Duplicator <= 3.0.11 - Authorization Bypass to Authenticated (Contributor+) Post Duplication

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-22 · updated 2026-10-12
• Weakness: CWE-863

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.

Affected products

• metaphorcreations Post Duplicator: through 3.0.11

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/
• https://www.wordfence.com/threat-intel/vulnerabilities/id/bb671c8f-9e14-4f79-adfa-72f48ec02449?source=cve

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