Plugin Vulnerable to Stored Cross-Site Scripting
CVE-2017-20192

8.3HIGH

Key Information:

Badges

๐Ÿ‘พ Exploit Exists๐ŸŸก Public PoC๐ŸŸฃ EPSS 22%

What is CVE-2017-20192?

The Formidable Form Builder plugin for WordPress contains a vulnerability that permits Stored Cross-Site Scripting (XSS) attacks via multiple parameters during form submissions, including 'after_html'. This flaw arises due to inadequate input sanitization and output escaping practices in versions earlier than 2.05.03. As a result, unauthenticated attackers can exploit this weakness to inject malicious web scripts, which may execute in the browsers of affected users, leading to potential data breaches and other security risks.

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Affected Version(s)

Formidable Forms โ€“ Contact Form Plugin, Survey, Quiz, Payment, Calculator Form & Custom Form Builder * < 2.05.03

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

References

EPSS Score

22% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.3
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

Timeline

  • ๐ŸŸก

    Public PoC available

  • ๐Ÿ‘พ

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jouko Pynnรถne
.