---
id: CVE-2026-92212
title: >-
  The JetFormBuilder — Dynamic Blocks Form Builder plugin for WordPress is
  vulnerable to Reflected Cross-Site Scripting via 'jfb_xss' (URL Query
  Variable) Parameter via Calculated Field in all versions up to, and including,
  3.6.5.3 due to …
summary: >-
  The JetFormBuilder — Dynamic Blocks Form Builder plugin for WordPress is
  vulnerable to Reflected Cross-Site Scripting via 'jfb_xss' (URL Query
  Variable) Parameter via Calculated Field in all versions up to, and including,
  3.6.5.3 due to …
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: jetmonsters
product: JetFormBuilder — Dynamic Blocks Form Builder
affected:
  - jetformbuilder_dynamic_blocks_form_builder <= 3.6.5.3
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T14:17:21.880'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-92212'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.6.5.3/assets/build/frontend/main.js
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.6.5.3/includes/blocks/render/calculated-field-render.php#L42
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.6.5.3/includes/presets/sources/preset-source-query-var.php#L21
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.6.5.3/templates/fields/calculated-field.php#L31
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3707612%40jetformbuilder&new=3707612%40jetformbuilder
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/37a72530-35d0-4fe8-82c6-50c87f61e731?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
epss: 0.00215
epssPercentile: 0.10632
ingestedAt: '2026-09-25T07:01:12.113Z'
---

## Overview

The JetFormBuilder — Dynamic Blocks Form Builder plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via 'jfb_xss' (URL Query Variable) Parameter via Calculated Field in all versions up to, and including, 3.6.5.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Exploitation requires the targeted page to host a form configured with both a URL Query Variable preset field and a Calculated Field that references it, which are standard plugin features.

## Remediation

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