WordPress plugin
Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 29 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
- Critical4
- High8
- Medium17
- Low0
All Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder vulnerabilities
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Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: common questions
Does Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder have known vulnerabilities?
Yes. VulnCrest Radar lists 29 known vulnerabilities in Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: 4 critical, 8 high, 17 medium. None are known to affect version null.
How do I check which version of Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder vulnerability?
CVE-2026-89435, published Oct 29, 2026: Formidable Forms <= 6.35 - Authenticated (Subscriber+) Arbitrary Plugin Installation via 'file_url' Parameter. Severity: High (CVSS 8.8).
Is any Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder vulnerability listed in CISA KEV?
No. None of the known Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder vulnerabilities is currently listed in the CISA KEV catalog.