JetFormBuilder — Dynamic Blocks Form Builder < 3.6.5.2 - Unauthenticated Information Exposure

5.3
Exposure of Sensitive Information to an Unauthorized Actor
CVE CVE-2026-19858
CVSS 5.3 (Medium)
Publicly Published September 7, 2026
Last Updated September 9, 2026
Researcher Jakub Herman

Description

The JetFormBuilder — Dynamic Blocks Form Builder plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to 3.6.5.2. This makes it possible for unauthenticated attackers to extract sensitive user or configuration data.

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Vulnerability Details for JetFormBuilder — Dynamic Blocks Form Builder

Software Type Plugin
Software Slug jetformbuilder (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.6.5.2, or a newer patched version
Affected Version
  • < 3.6.5.2
Patched Version
  • 3.6.5.2

Recent vulnerabilities in JetFormBuilder — Dynamic Blocks Form Builder

# Title CVE ID CVSS Researchers Date
1 JetFormBuilder <= 3.6.6 - Reflected DOM-Based Cross-Site Scripting via 'query_var' Dynamic Preset via data-jfb-macro / JFB_FIELD:: Macro Renderer CVE-2026-103912 4.7 Zenith-sec October 9, 2026
2 JetFormBuilder <= 3.6.5.4 - Unauthenticated Stored Cross-Site Scripting via 'choice' Post Meta via Insert/Update Post Action CVE-2026-97342 7.2 UKO October 1, 2026
3 JetFormBuilder — Dynamic Blocks Form Builder <= 3.6.5.4 - Unauthenticated Stored Cross-Site Scripting CVE-2026-102391 7.2 Intrudify September 30, 2026
4 JetFormBuilder <= 3.6.5.3 - Reflected Cross-Site Scripting via 'jfb_xss' (URL Query Variable) Parameter via Calculated Field CVE-2026-92212 6.1 Tarcísio Luchesi De Almeida Silva (Poystick) September 24, 2026
5 JetFormBuilder <= 3.6.5.2 - Authenticated (Administrator+) Arbitrary File Deletion CVE-2026-19860 6.5 Sai Praneeth Koti September 17, 2026
6 JetFormBuilder <= 3.6.2 - Unauthenticated Privilege Escalation via '_jet_engine_booking_form_id' Parameter CVE-2026-12793 9.8 daroo September 15, 2026
7 JetFormBuilder — Dynamic Blocks Form Builder <= 3.6.5.1 - Unauthenticated Stored Cross-Site Scripting CVE-2026-84817 7.2 Anthony Green of Greenhat Security September 7, 2026
8 JetFormBuilder <= 3.6.2 - Missing Authorization to Unauthenticated JetEngine Options Page Modification 5.3 andrea bocchetti September 3, 2026
9 JetFormBuilder — Dynamic Blocks Form Builder < 3.6.5.2 - Unauthenticated Arbitrary Shortcode Execution CVE-2026-19859 9.8 Jakub Herman September 3, 2026
10 JetFormBuilder — Dynamic Blocks Form Builder < 3.6.5.2 - Unauthenticated Stored Cross-Site Scripting CVE-2026-19861 7.2 Sai Praneeth Koti September 3, 2026

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