---
id: CVE-2026-121977
title: >-
  JetFormBuilder <= 3.6.8 - Unauthenticated Stored Cross-Site Scripting via
  Dynamic Value Block `to_set` Property
summary: >-
  The JetFormBuilder — Dynamic Blocks Form Builder plugin for WordPress is
  vulnerable to Stored Cross-Site Scripting via the 'note (form field whose
  value is written to post meta `note`)' parameter in all versions up to, and
  including, 3.6…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: jetmonsters
product: JetFormBuilder — Dynamic Blocks Form Builder
affected:
  - jetformbuilder_dynamic_blocks_form_builder <= 3.6.8
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-07T17:58:49.168541Z'
published: '2026-11-07'
updated: '2026-11-07'
sourceUpdated: '2026-11-07T18:05:59.085Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121977'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/f586a89a-7d1f-48ef-bbf6-0c78154bccbc?source=cve
  - url: >-
      https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.6.8/includes/blocks/dynamic-value.php#L88
  - url: >-
      https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.6.8/assets/build/frontend/dynamic.value.js
  - url: >-
      https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.6.8/includes/presets/sources/preset-source-post.php#L83
  - url: >-
      https://plugins.trac.wordpress.org/browser/jetformbuilder/tags/3.6.8/includes/functions.php#L123
  - url: >-
      https://plugins.trac.wordpress.org/changeset/3788241/jetformbuilder/trunk/includes/blocks/dynamic-value.php
tags:
  - cve.org
ingestedAt: '2026-11-07T12:16:41.119Z'
---

## Overview

The JetFormBuilder — Dynamic Blocks Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'note (form field whose value is written to post meta `note`)' parameter in all versions up to, and including, 3.6.8 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. Successful exploitation requires a privileged user with the edit_others_posts capability to visit a form URL containing the attacker-created post ID, a delivery step the attacker controls via a crafted phishing link.

## Affected

- `jetformbuilder_dynamic_blocks_form_builder <= 3.6.8`

## Remediation

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