JetFormBuilder <= 3.5.1.2 - Authenticated (Administrator+) PHP Object Injection

6.6
Deserialization of Untrusted Data
CVE CVE-2025-53990
CVSS 6.6 (Medium)
Publicly Published July 16, 2025
Last Updated July 22, 2025
Researcher Que Thanh Tuan - Blue Rock

Description

The JetFormBuilder plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 3.5.1.2 via deserialization of untrusted input. This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

References

Share

Vulnerability Details for JetFormBuilder — Dynamic Blocks Form Builder

Software Type Plugin
Software Slug jetformbuilder (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.5.2, or a newer patched version
Affected Version
  • <= 3.5.1.2
Patched Version
  • 3.5.2

Recent vulnerabilities in JetFormBuilder — Dynamic Blocks Form Builder

# Title CVE ID CVSS Researchers Date
1 JetFormBuilder <= 3.6.2 - Unauthenticated Privilege Escalation via '_jet_engine_booking_form_id' Parameter CVE-2026-12793 9.8 daroo September 15, 2026
2 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
3 JetFormBuilder — Dynamic Blocks Form Builder < 3.6.5.2 - Unauthenticated Information Exposure CVE-2026-19858 5.3 Jakub Herman September 7, 2026
4 JetFormBuilder — Dynamic Blocks Form Builder < 3.6.5.2 - Unauthenticated Email Header Injection CVE-2026-19862 5.3 Emirhan Kurt September 3, 2026
5 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
6 JetFormBuilder — Dynamic Blocks Form Builder < 3.6.5.2 - Unauthenticated Arbitrary Shortcode Execution CVE-2026-19859 9.8 Jakub Herman September 3, 2026
7 JetFormBuilder <= 3.6.2 - Missing Authorization to Unauthenticated JetEngine Options Page Modification 5.3 andrea bocchetti September 3, 2026
8 JetFormBuilder — Dynamic Blocks Form Builder <= 3.6.4.1 - Missing Authorization CVE-2026-28140 5.3 Ananda Dhakal August 4, 2026
9 JetFormBuilder <= 3.6.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'context' Parameter CVE-2026-13459 5.3 Niv Kochan July 1, 2026
10 JetFormBuilder — Dynamic Blocks Form Builder <= 3.6.1 - Authenticated (Subscriber+) Privilege Escalation CVE-2026-54196 8.8 Jonathan Dersch June 16, 2026

Did you know Wordfence Intelligence provides free personal and commercial API access to our comprehensive WordPress vulnerability database, along with a free webhook integration to stay on top of the latest vulnerabilities added and updated in the database? Get started today!

Learn more

Want to get notified of the latest vulnerabilities that may affect your WordPress site?
Install Wordfence on your site today to get notified immediately if your site is affected by a vulnerability that has been added to our database.

Get Wordfence

The Wordfence Intelligence WordPress vulnerability database is completely free to access and query via API. Please review the documentation on how to access and consume the vulnerability data via API.

Documentation