---
id: CVE-2026-118500
title: >-
  Cool FormKit Lite <= 2.7.9 - Authenticated (Contributor+) Stored DOM-Based
  Cross-Site Scripting via Form Field custom_id Parameter
summary: >-
  The Cool FormKit Lite – Advanced Form Builder for Elementor plugin for
  WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the
  '_elementor_data.form_fields[].custom_id' parameter in all versions up to, and
  including, 2.7…
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'
cvssSource: cna
cwe:
  - CWE-79
vendor: coolplugins
product: Cool FormKit Lite – Advanced Form Builder for Elementor
affected:
  - cool_formkit_lite_advanced_form_builder_for_elementor <= 2.7.9
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-30T15:20:48.539470Z'
published: '2026-10-30'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T15:57:46.333Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-118500'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/94c6ee49-604d-4183-bd47-7ab2732de6b4?source=cve
  - url: >-
      https://plugins.trac.wordpress.org/browser/extensions-for-elementor-form/tags/2.7.9/assets/js/shared/logic-frontend.js#L719
  - url: >-
      https://plugins.trac.wordpress.org/browser/extensions-for-elementor-form/tags/2.7.9/includes/fields/conditional-fields-trait.php#L753
  - url: >-
      https://plugins.trac.wordpress.org/browser/extensions-for-elementor-form/tags/2.7.9/includes/fields/conditional-fields-trait.php#L704
  - url: >-
      https://plugins.trac.wordpress.org/browser/extensions-for-elementor-form/tags/2.7.9/modules/forms/widgets/cool-form.php#L711
  - url: 'https://github.com/CoolPluginsTeam/extensions-for-elementor-form/pull/90'
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3772891/extensions-for-elementor-form/trunk/assets/js/shared/logic-frontend.js
tags:
  - cve.org
epss: 0.00216
epssPercentile: 0.12061
ingestedAt: '2026-11-05T16:24:31.047Z'
---

## Overview

The Cool FormKit Lite – Advanced Form Builder for Elementor plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the '_elementor_data.form_fields[].custom_id' parameter in all versions up to, and including, 2.7.9 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The esc_html() call applied at server emission is bypassed because the HTML fragment-serialization algorithm restores &quot; to a raw double-quote inside text nodes when jQuery .html() extracts the template, allowing the attacker-controlled custom_id to break out of an HTML attribute context within the plugin's own frontend script.

## Affected

- `cool_formkit_lite_advanced_form_builder_for_elementor <= 2.7.9`

## Remediation

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