Post Duplicator <= 3.0.11 - Authorization Bypass to Authenticated (Contributor+) Post Duplication

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-4245
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-22 12:16:25 UTC
Updated2026-08-24 20:16:44 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

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

EPSS: 0.003850000 probability, percentile 0.318520000 (date 2026-08-23)

Problem Types: CWE-863 | CWE-863 CWE-863 Incorrect Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Metaphorcreations Post Duplicator affected 3.0.11 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/bb671c8f-9e14-4f79-adfa-72f48... [email protected] www.wordfence.com
plugins.trac.wordpress.org/changeset/3485579 [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Quốc Huy (jtwings) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-15T22:02:45.000ZVendor Notified
CNA2026-08-21T00:00:00.000ZDisclosed

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