sales@hackhalt.com
Free Download

Home / Threats / CVE-2023-37979

Ninja Forms - Cross-Site Scripting (XSS) (CVE-2023-37979)

CVE-2023-37979

Vulnerability CVE-2023-37979 PLUGIN ninja-forms HIGH

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Saturday Drive Ninja Forms Contact Form plugin

CVE-2023-37979

HIGH CVSS 7.1 Published 2023-07-27 Updated 2026-06-17
AI Risk High (75/100) Active Exploit: No strong signal Published Exploit: Public exploit references found Priority: P2 Urgent
Severity Band HIGH
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Affected Components 1
Reference Links 3
AI Risk Engine High (75/100)
Exploitability Medium
Active Exploitation No strong signal
Published Exploit Status Public exploit references found

Threat Timeline

  1. 2023-07-27 CVE published and first recorded in the threat feed.
  2. 2026-06-17 Record updated with latest vulnerability metadata.
  3. 2026-09-19 AI technical context refreshed for mitigation and impact guidance.
  4. Now Monitoring for follow-up changes, linked references, and new related CVEs.

AI Context

Machine-generated threat intelligence

AI Updated just now

AI enriched just now (2026-09-19 05:07 UTC)

Technical Summary

Unauth. Reflected Cross-Site Scripting (XSS) vulnerability in Saturday Drive Ninja Forms Contact Form plugin

Potential Impact

Severity is HIGH (CVSS 7.1). Depending on deployment context, affected components may be exposed to unauthorized actions or data integrity risk.

Exploitability Assessment

Exploitability is assessed as Medium based on published exploit references.

Primary risk drivers: published exploit references

Mitigation Recommendations

Validate affected product versions, prioritize patching, and monitor references for vendor remediation guidance. If immediate patching is not possible, apply compensating controls and limit exposure of vulnerable surfaces.

Detection & Monitoring

Track authentication anomalies, unexpected file writes, and suspicious plugin API activity around affected components.

Business Impact Lens

AI risk score 75/100 (High, Medium) with priority P2 Urgent. Prioritize remediation where affected components process customer data, admin sessions, or Internet-exposed workflows.

Affected Products

Ninja Forms PLUGIN · ninja-forms Affected: < 3.6.26 Fixed in: 3.6.26

Related Vulnerabilities

Browse All Threats

Newest linked vulnerabilities to keep visitors exploring adjacent CVE coverage.

Ninja Forms - PHP Object Injection (CVE-2026-11363) CVE-2026-11363 Published 2026-09-09 New Ninja Forms - Security Vulnerability (CVE-2026-80437) CVE-2026-80437 Published 2026-09-06 New Ninja Forms - Cross-Site Scripting (XSS) (CVE-2026-19769) CVE-2026-19769 Published 2026-09-05 New Ninja Forms - Security Vulnerability (CVE-2026-80438) CVE-2026-80438 Published 2026-09-04 Ninja Forms - Security Vulnerability (CVE-2026-15256) CVE-2026-15256 Published 2026-08-06 Ninja Forms - SQL Injection (CVE-2026-15663) CVE-2026-15663 Published 2026-07-24

References

What to do about this

Patch on your next cycle Worth fixing, but not ahead of other work.

Fix it

Update Ninja Forms to 3.6.26 or later.

That is the complete fix. Everything below is what protects you in the meantime.

Cannot update today? Request / payload inspection (WAF) in Hack Halt ProSecure blocks this class of attack before WordPress processes the request.

Inspect request parameters and bodies for injection, traversal and file-inclusion payloads, and refuse the request rather than logging it.

Compare Hack Halt plans Start free

Not sure if you are affected?

Scan your site to see whether it runs Ninja Forms, and at which version.

Free, no installation, no account. It reads what your site already publishes, then tells you which plugins carry known vulnerabilities and what to do about each one.

Scan my site free See what Hack Halt does

Am I affected by this vulnerability?

You are affected if your site runs Ninja Forms. Versions below 3.6.26 are vulnerable; that release and later are not.

How do I fix it?

Update Ninja Forms to version 3.6.26 or later. That is the complete fix. Until you can update, Request / payload inspection (WAF) in Hack Halt ProSecure contains this class of attack at the request layer.

What can an attacker actually do?

This is a Cross-Site Scripting (XSS) flaw. An attacker who exploits it can run script in a visitor's browser, stealing sessions or planting an administrator account.

WordPress security that blocks attacks before they land.

sales@hackhalt.com

Product

Resources

Company

© Hack Halt Inc. All rights reserved.