Formidable Forms < 2.05.02 - Cross-Site Scripting

Formidable Form Builder for WordPress versions before 2.05.03 contains a stored cross-site scripting caused by insufficient input sanitization and output escaping in form parameters like 'afterhtml', letting unauthenticated attackers inject and execute arbitrary scripts in victims' browsers id:...

Formidable Form Builder < 2.05.03 - Unauthenticated Information Disclosure

The Formidable Form Builder plugin for WordPress is vulnerable to Sensitive Data Exposure in versions up to, and including, 2.05.03 via the frmformspreview AJAX action. This makes it possible for unauthenticated attackers to export all of the form entries for a given form. id: CVE-2017-20194 info...

CVE-2021-24884

CVE-2021-24884 XSS2RCE in Formidable 4.09.04 Formidable 4.09.04 allowed to inject certain HTML Tags like ,,, and . This could allow an unauthenticated, remote attacker to exploit a HTML-injection by injecting a malicous link. The HTML-injection may trick authenticated users to follow the link. If...

CVE-2017-20192-formidable-forms

CVE-2017-20192 — Formidable Forms WordPress — Vulnerable Docker Lab Reproducible Docker lab for CVE-2017-20192 Formidable Forms 2.05.03 stored XSS. Quickstart docker compose up -d --build Target: http://127.0.0.1:18080 Validate lab helper This helper script: submits a crafted entry unauthenticate...

CVE-2023-2877

CVE-2023-2877 Formidable Forms 6.3.1 - Subscriber+ Remote Code Execution Usage usage: CVE-2023-2877.py -h -w URL -u USERNAME -p PASSWORD -pl PLUGIN -c CMD CVE-2023-2877 - Formidable Forms 6.3.1 - Subscriber+ Remote Code Execution Script options: -h, --help show this help message and exit -w URL,...

CVE-2023-1405

CVE-2023-1405 Formidable Forms = 6.1.2 - Unauthenticated PHP Object Injection Description: The Formidable Forms plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 6.1.2 via deserialization of untrusted input from form submissions. This allows...

CVE-2022-29622

CVE-2022–29622: Invulnerability Analysis This codebase was created to help security professionals and developers to understand why I think Formidable was not vulnerable to CVE-2022-29622. I have written up my analysis here: CVE-2022–29622: Invulnerability Analysis As some did not understand it, I...

CVE-2026-89435

The Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More plugin for WordPress is vulnerable to Arbitrary Plugin Installation in all versions up to, and including, 6.35 via the 'fileurl' parameter parameter. This is due to insufficient URL prefix validation in...

EUVD-2026-113736

The Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More plugin for WordPress is vulnerable to Arbitrary Plugin Installation in all versions up to, and including, 6.35 via the 'fileurl' parameter parameter. This is due to insufficient URL prefix validation in...

CVE-2026-89435

The Formidable Forms WordPress plugin (versions up to and including 6.35 ) is vulnerable to Arbitrary Plugin Installation via the file_url parameter. The root cause is insufficient URL prefix validation within the validate_url_is_in_s3_bucket() function, combined with a permission callback that r...

CVE-2026-89435 Formidable Forms <= 6.35 - Authenticated (Subscriber+) Arbitrary Plugin Installation via 'file_url' Parameter

The Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More plugin for WordPress is vulnerable to Arbitrary Plugin Installation in all versions up to, and including, 6.35 via the 'fileurl' parameter parameter. This is due to insufficient URL prefix validation in...

CVE-2026-89435 Formidable Forms <= 6.35 - Authenticated (Subscriber+) Arbitrary Plugin Installation via 'file_url' Parameter

The Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More plugin for WordPress is vulnerable to Arbitrary Plugin Installation in all versions up to, and including, 6.35 via the 'fileurl' parameter parameter. This is due to insufficient URL prefix validation in...

CVE-2026-89435: strategy11team: The Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More plugin for WordPress is…

The Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More plugin for WordPress is vulnerable to Arbitrary Plugin Installation in all versions up to, and including, 6.35 via the 'fileurl' parameter parameter. This is due to insufficient URL prefix validation in...

PT-2026-133299

The Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More plugin for WordPress is vulnerable to Arbitrary Plugin Installation in all versions up to, and including, 6.35 via the 'file url' parameter parameter. This is due to insufficient URL prefix validation in...

WordPress Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder plugin <= 6.35 - Authenticated (Subscriber+) Arbitrary Plugin Installation vulnerability

Authenticated Subscriber+ Arbitrary Plugin Installation vulnerability discovered by Supakiad S. m3ez in WordPress Plugin Formidable Forms versions = 6.35...

CVE-2026-85642

The Formidable Forms WordPress plugin before 7.0 does not verify the identity of the caller before recording the timestamp it uses to rate limit payment gateway verification requests, allowing unauthenticated attackers to consume the daily allowance and cause legitimate verification attempts to b...

EUVD-2026-107084

The Formidable Forms WordPress plugin before 7.0 does not verify the identity of the caller before recording the timestamp it uses to rate limit payment gateway verification requests, allowing unauthenticated attackers to consume the daily allowance and cause legitimate verification attempts to b...

CVE-2026-85642

The Formidable Forms WordPress plugin (versions before 7.0 ) is vulnerable to a Denial of Service (DoS) attack because it fails to verify the identity of the caller before recording timestamps for rate limiting payment gateway verification requests . An unauthenticated attacker can exploit this f...

WordPress Formidable Forms plugin < 7.0 - Unauthenticated Payment Gateway Connect Verification DoS vulnerability

Unauthenticated Payment Gateway Connect Verification DoS vulnerability discovered by Naoki Kawahigashi in WordPress Plugin Formidable Forms versions 7.0...

CVE-2026-85642 Formidable Forms 6.5 - 6.35 - Unauthenticated Payment Gateway Connect Verification DoS

The Formidable Forms WordPress plugin before 7.0 does not verify the identity of the caller before recording the timestamp it uses to rate limit payment gateway verification requests, allowing unauthenticated attackers to consume the daily allowance and cause legitimate verification attempts to b...