What is CVE-2024-3866?

CVE-2024-3866 is a medium-severity vulnerability in Kstover Ninja Forms – The Contact Form Builder That Grows With You, classified under Cross-site Scripting. CVSS score: 4.7/10. Published 2024-09-25.

How severe is CVE-2024-3866?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Is CVE-2024-3866 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Kstover Ninja Forms – The Contact Form Builder That Grows With You

CVE-2024-3866

The Ninja Forms Contact Form plugin for WordPress is vulnerable to Reflected Self-Based Cross-Site Scripting via the 'Referer' header in all versions up to, and including, 3.8.15 due to insufficient input sanitization and output escaping…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.013 (80.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Kstover Ninja Forms – The Contact Form Builder That Grows With You — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-3866?: CVE-2024-3866 is a medium-severity vulnerability in Kstover Ninja Forms – The Contact Form Builder That Grows With You, classified under Cross-site Scripting. CVSS score: 4.7/10. Published 2024-09-25.
How severe is CVE-2024-3866?: Medium severity. CVSS v3 base score is 4.7 out of 10.
Is CVE-2024-3866 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.