---
id: CVE-2026-100182
title: >-
  The Download Monitor plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via Cross-Origin postMessage to Admin Editor in all versions up to,
  and including, 5.2.10 due to insufficient input sanitization and output
  escaping
summary: >-
  The Download Monitor plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via Cross-Origin postMessage to Admin Editor in all versions up to,
  and including, 5.2.10 due to insufficient input sanitization and output
  escaping. …
severity: high
cvss: 7.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: wpchill
product: Download Monitor
affected:
  - download_monitor <= 5.2.10
published: '2026-10-02'
updated: '2026-10-02'
sourceUpdated: '2026-10-02T13:18:55.613'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100182'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/download-monitor/tags/5.2.10/assets/js/download-operations.js#L11
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/download-monitor/tags/5.2.10/assets/js/download-operations.js#L34
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/download-monitor/tags/5.2.10/src/Admin/AdminScripts.php#L56
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/download-monitor/tags/5.2.10/src/Shortcodes.php#L285
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3716767%40download-monitor&new=3716767%40download-monitor
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/59d4c073-af86-4e60-87f5-94cc46f407a2?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-02T08:14:06.220Z'
---

## Overview

The Download Monitor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Cross-Origin postMessage to Admin Editor in all versions up to, and including, 5.2.10 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This requires the attacker to trick an authenticated Administrator into visiting an attacker-controlled page that targets an open Download edit screen, after which the payload is persisted unfiltered via the Administrator's unfiltered_html capability and later emitted verbatim to the frontend by the [download_data] shortcode's unescaped post_content render path.

## Remediation

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