CVE-2024-13666: CWE-20 Improper Input Validation in techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder
The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to IP Address Spoofing in all versions up to, and including, 5.2.12 due to insufficient IP address validation and use of user-supplied HTTP headers as a primary method for IP retrieval. This makes it possible for unauthenticated attackers spoof their IP address and submit forms that may have IP-based restrictions.
AI Analysis
Technical Summary
CVE-2024-13666 describes an IP address spoofing vulnerability in the Fluent Forms WordPress plugin (versions up to 5.2.12). The issue arises from insufficient validation of IP addresses and reliance on user-supplied HTTP headers for IP retrieval, allowing unauthenticated attackers to spoof their IP address. This can enable attackers to bypass IP-based restrictions on form submissions. The vulnerability is classified under CWE-20 (Improper Input Validation) and has a CVSS 3.1 base score of 5.3 (medium severity).
Potential Impact
The vulnerability allows unauthenticated attackers to spoof their IP address when submitting forms, potentially bypassing IP-based restrictions or controls implemented by the plugin. There is no direct confidentiality or availability impact reported. No known exploits in the wild have been identified.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, consider implementing additional server-side validation of IP addresses or restricting form submissions through other means not reliant on user-supplied headers.
CVE-2024-13666: CWE-20 Improper Input Validation in techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder
Description
The Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder plugin for WordPress is vulnerable to IP Address Spoofing in all versions up to, and including, 5.2.12 due to insufficient IP address validation and use of user-supplied HTTP headers as a primary method for IP retrieval. This makes it possible for unauthenticated attackers spoof their IP address and submit forms that may have IP-based restrictions.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2024-13666 describes an IP address spoofing vulnerability in the Fluent Forms WordPress plugin (versions up to 5.2.12). The issue arises from insufficient validation of IP addresses and reliance on user-supplied HTTP headers for IP retrieval, allowing unauthenticated attackers to spoof their IP address. This can enable attackers to bypass IP-based restrictions on form submissions. The vulnerability is classified under CWE-20 (Improper Input Validation) and has a CVSS 3.1 base score of 5.3 (medium severity).
Potential Impact
The vulnerability allows unauthenticated attackers to spoof their IP address when submitting forms, potentially bypassing IP-based restrictions or controls implemented by the plugin. There is no direct confidentiality or availability impact reported. No known exploits in the wild have been identified.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, consider implementing additional server-side validation of IP addresses or restricting form submissions through other means not reliant on user-supplied headers.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-01-23T17:21:55.939Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 699f6e67b7ef31ef0b59ffcc
Added to database: 2/25/2026, 9:49:27 PM
Last enriched: 4/9/2026, 6:44:54 AM
Last updated: 4/11/2026, 11:21:04 PM
Views: 25
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