---
id: CVE-2026-107756
title: >-
  The Meow Lightbox plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via the 'display_name + comment' parameter in all versions up to,
  and including, 5.6.2 due to insufficient input sanitization and output
  escaping
summary: >-
  The Meow Lightbox plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via the 'display_name + comment' parameter in all versions up to,
  and including, 5.6.2 due to insufficient input sanitization and output
  escaping. This m…
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
published: '2026-10-14'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T08:17:04.870'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-107756'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/meow-lightbox/tags/5.6.2/classes/core.php#L1087
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/meow-lightbox/tags/5.6.2/classes/core.php#L1115
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/meow-lightbox/tags/5.6.2/classes/core.php#L1277
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/meow-lightbox/tags/5.6.2/classes/core.php#L57
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/meow-lightbox/tags/5.6.2/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib/simple_html_dom.php#L1531
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/meow-lightbox/tags/5.6.2/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib/simple_html_dom.php#L2112
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/meow-lightbox/tags/5.6.2/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib/simple_html_dom.php#L2207
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/meow-lightbox/tags/5.6.2/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib/simple_html_dom.php#L503
    label: security@wordfence.com
  - url: 'https://plugins.trac.wordpress.org/changeset/3737480/meow-lightbox'
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3737480/meow-lightbox/trunk/vendor/kub-at/php-simple-html-dom-parser/src/KubAT/PhpSimple/lib/simple_html_dom.php
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/69de4c0b-fda4-4dd0-80ae-2cdd53fc581b?source=cve
    label: security@wordfence.com
tags:
  - nvd
ingestedAt: '2026-10-14T08:23:04.343Z'
---

## Overview

The Meow Lightbox plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'display_name + comment' parameter in all versions up to, and including, 5.6.2 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 vulnerability is only exploitable when the plugin's Output Buffering option is enabled (disabled by default), and requires the attacker to have at least one previously approved comment on the site so that subsequent comments are auto-approved by WordPress core.

## Remediation

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