---
id: CVE-2026-4244
title: >-
  The Post Duplicator plugin for WordPress is vulnerable to unauthorized
  modification of data due to a missing capability check on the
  `duplicate_post()` function in all versions up to, and including, 3.0.11
summary: >-
  The Post Duplicator plugin for WordPress is vulnerable to unauthorized
  modification of data due to a missing capability check on the
  `duplicate_post()` function in all versions up to, and including, 3.0.11. This
  is due to the function no…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
published: '2026-08-22'
updated: '2026-08-22'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-4244'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L520
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L550
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/post-duplicator/trunk/includes/api.php#L728
    label: security@wordfence.com
  - url: 'https://plugins.trac.wordpress.org/changeset/3485579/'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/64553742-ff2b-40e9-92c3-3458a9f988a2?source=cve
    label: security@wordfence.com
tags:
  - nvd
ingestedAt: '2026-08-23T04:42:14.132Z'
epss: 0.00196
epssPercentile: 0.096
---

## Overview

The Post Duplicator plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `duplicate_post()` function in all versions up to, and including, 3.0.11. This is due to the function not verifying that the user has `edit_others_posts` capability before accepting a `selectedAuthorId` parameter via the `duplicate-post` REST endpoint. This makes it possible for authenticated attackers, with Contributor-level access and above, to create duplicated posts attributed to any user, including administrators.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.