CVE-2017-20192 Formidable Form Builder < 2.05.03 - Unauthenticated Stored Cross-Site Scripting

High 8.3 Published Updated

Unauthenticated attackers can inject arbitrary scripts via form entries, executing code in victims' browsers using the Formidable Forms plugin.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2017-20192?

CVE-2017-20192 is a high-severity cross-site scripting vulnerability in strategy11team Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator Form & Custom Form Builder, published on 16 Oct 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Formidable Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple parameters submitted during form entries like 'after_html' in versions before 2.05.03 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in a victim's browser.

Weakness: CWE-79

Which versions are affected by CVE-2017-20192?

It affects 1 product.

Products include Strategy11 Formidable Form Builder.

How do I fix CVE-2017-20192?

No fix has been published for CVE-2017-20192 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2017-20192 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-20192 exists.

Public exploit code: 1 Nuclei template and 1 proofs of concept on GitHub.

Sources

Also known as GHSA-25w9-jxhc-6r43.

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