XSS in Strategy11 Formidable Form Builder

CVE-2017-20192

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.010 (60.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2017-20192?
CVE-2017-20192 is a high-severity vulnerability in Strategy11 Formidable Form Builder, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2024-10-16.
How severe is CVE-2017-20192?
High severity. CVSS v3 base score is 8.3 out of 10.
Is CVE-2017-20192 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.