CVE-2023-4109 — The Ninja Forms WordPress Ninja Forms Contact Form WordPress plugin before 3

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

01What is this vulnerability?

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

02Affected products

Vendor	Product	Versions
Unknown	Ninja Forms Contact Form	0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-08-30T14:22:02.447Z
• Last modified: 2025-04-23T16:18:53.384Z

09References

• wpscan.com — https://wpscan.com/vulnerability/558e06ab-704b-4bb1-ba7f-b5f6bbbd68d9