CVE-2023-4109

Name: CVE-2023-4109
Creator: NVD / NIST
Published: 2023-08-30T15:15:09.887+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2023-4109 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. The Ninja Forms WordPress Ninja Forms Contact Form WordPress plugin before 3.6.26 was affected by a HTML Injection security vulnerability.. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

Description

The Ninja Forms WordPress Ninja Forms Contact Form WordPress plugin before 3.6.26 was affected by a HTML Injection security vulnerability.

Metrics

CVSS 3.1

4.8/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.38%

29.7th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Ninjaforms	Ninja Forms Contact Form	< 3.6.26

References

https://wpscan.com/vulnerability/558e06ab-704b-4bb1-ba7f-b5f6bbbd68d9Exploit, Third Party Advisory
https://wpscan.com/vulnerability/558e06ab-704b-4bb1-ba7f-b5f6bbbd68d9Exploit, Third Party Advisory

Timeline

Published: Aug 30, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-4109?

The Ninja Forms WordPress Ninja Forms Contact Form WordPress plugin before 3.6.26 was affected by a HTML Injection security vulnerability.

How severe is CVE-2023-4109?

CVE-2023-4109 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2023-4109?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-4109?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST