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Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder <= 5.2.12 — IP-Spoofing

CVE-2024-13666Published · Updated

Action summary

Affected: ≤5.2.12Update to 6.0.0 or newer

All remediation steps
Watch plugin
Severity
Medium5.3
CVSS
5.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-20 Improper Input Validation
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder fluentform

  1. Affected≤ 5.2.12
  2. Patched in6.0.0

Update to 6.0.0 or newer.

You are affected if you run ≤ 5.2.12. Version 6.0.0 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 6.0.0, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to shaman0x01.

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.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder

All 47
More vulnerabilities in Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder
SeverityVulnerabilityCVEPublished
Medium5.3Missing Authorization
≤6.2.16Update to 6.2.17
CVE-2026-120858
Medium5.3Missing Authorization
≤6.2.15Update to 6.2.16
CVE-2026-111831
Medium5.4Missing Authorization to Authenticated (Custom+) Sensitive Data Exposure and Modification
≤6.2.5Update to 6.2.6
CVE-2026-15178
Medium4.7Reflected Cross-Site Scripting via '{get.*}' Editor SmartCode Parameter
≤6.2.14Update to 6.2.15
CVE-2026-101324
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤6.2.14Update to 6.2.15
CVE-2026-103343

Timeline

  1. CVE published

    Severity medium, CVSS 5.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers
Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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