Authorization Bypass in Post Duplicator Plugin for WordPress
CVE-2026-4245

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Post Duplicator
Vendor
CVE Published:
22 August 2026

What is CVE-2026-4245?

The Post Duplicator plugin for WordPress is susceptible to an authorization bypass, impacting all versions up to and including 3.0.11. This vulnerability arises from the duplicate_post_permissions() permission callback, which solely checks for the duplicate_posts capability without corroborating whether the user has the publish_posts or other necessary capabilities. As a result, authenticated attackers with Contributor-level access or higher can create duplicate posts with future or private statuses, effectively circumventing the editorial review process. Moreover, the REST endpoint fails to implement the necessary checks for post-type duplication restrictions set by administrators, allowing duplication of post types that should have been disabled.

Affected Version(s)

Post Duplicator 0 <= 3.0.11

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/post-duplicato...
https://plugins.trac.wordpress.org/browser/post-duplicato...

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Quốc Huy (jtwings)
.