---
id: CVE-2026-19861
title: >-
  The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before
  3.6.5.2 does not properly sanitise and escape a form field's value before
  including it in the HTML notification emails it sends, allowing
  unauthenticated users to i…
summary: >-
  The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before
  3.6.5.2 does not properly sanitise and escape a form field's value before
  including it in the HTML notification emails it sends, allowing
  unauthenticated users to i…
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
published: '2026-09-05'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T19:09:21.310'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-19861'
references:
  - url: 'https://wpscan.com/vulnerability/c9c834a3-dc65-4972-9315-d4dcc7f26599/'
    label: contact@wpscan.com
tags:
  - nvd
epss: 0.00166
epssPercentile: 0.0517
ingestedAt: '2026-09-06T03:49:19.633Z'
---

## Overview

The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before 3.6.5.2 does not properly sanitise and escape a form field's value before including it in the HTML notification emails it sends, allowing unauthenticated users to inject arbitrary HTML into messages delivered to administrators and other recipients. Whether injected script executes depends on the recipient's mail client, but the injected markup is rendered regardless.

## Remediation

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