Formidable Form Builder <= 4.02 - PHP Object Injection

Deserialization of Untrusted Data
CVE CVE-2019-15780
CVSS 9.8 (Critical)
Publicly Published August 9, 2019
Last Updated February 1, 2023
Researchers Sam Thomas
Nour Alomary


The formidable plugin before 4.02.01 for WordPress has unsafe deserialization.



1 affected software package

Software Type Plugin
Software Slug formidable (view on
Patched? Yes
Remediation Update to version 4.02.01, or a newer patched version
Affected Version
  • < 4.02.01
Patched Version
  • 4.02.01

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