---
id: CVE-2026-89424
title: >-
  The Duplicate Post plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via the 'noti_token' parameter in all versions up to, and including,
  1.5.6 due to insufficient input sanitization and output escaping
summary: >-
  The Duplicate Post plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via the 'noti_token' parameter in all versions up to, and including,
  1.5.6 due to insufficient input sanitization and output escaping. This makes
  it pos…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: inisev
product: Duplicate Post
affected:
  - duplicate_post <= 1.5.6
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T09:17:09.570'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-89424'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/copy-delete-posts/tags/1.5.6/menu/notifications.php#L53
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/copy-delete-posts/tags/1.5.6/menu/notifications.php#L84
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/copy-delete-posts/tags/1.5.6/post/handler.php#L15
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/copy-delete-posts/tags/1.5.6/post/handler.php#L1598
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/copy-delete-posts/tags/1.5.6/post/handler.php#L1601
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3709767/copy-delete-posts/trunk/menu/notifications.php
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&new=3709767%40copy-delete-posts%2Ftags%2F1.5.7&old=3652254%40copy-delete-posts%2Ftags%2F1.5.6
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/c475c51e-f01d-4698-822f-5b8df999bf6d?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-01T09:41:14.156Z'
---

## Overview

The Duplicate Post plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'noti_token' parameter in all versions up to, and including, 1.5.6 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires that the site owner has enabled the plugin's User Level Permissions for the Subscriber role, as this grants access to the i_saw_this_noti AJAX branch needed to deliver the payload.

## Remediation

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