Is formidable-form-builder (WordPress plugin) vulnerable?

WordPress formidable-form-builder has 4 known advisories in the phpwarden feed. Feed 2026.10.28.3, updated 2026-10-28.

4advisories
1critical
0on CISA KEV
1no fix recorded
CVETitleSeverityCVSSAffectedFixed in
CVE-2021-24884The Formidable Form Builder WordPress plugin before 4.09.05 allows to inject certain HTML Tags like <audio>,<video>,<img>,<a> and<button>.Thcritical9.6<4.09.054.09.05
CVE-2017-20194The Formidable Form Builder plugin for WordPress is vulnerable to Sensitive Data Exposure in versions up to, and including, 2.05.03 via the medium5.3<=2.05.03–
CVE-2021-24608The Formidable Form Builder – Contact Form, Survey & Quiz Forms Plugin for WordPress plugin before 5.0.07 does not sanitise and escape its Fmedium4.8<5.0.075.0.07
CVE-2023-0816The Formidable Forms WordPress plugin before 6.1 uses several potentially untrusted headers to determine the IP address of the client, leadimedium6.5<6.16.1

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden wordpress /var/www/html

Or keep it checked automatically with the GitHub Action or a nightly cron; see WordPress docs.

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