What’s Vulnerable › Vulnerabilities

CVE-2024-11052: Ninja Forms – The Contact Form Builder That Grows With You <= 3.8.19 - Unauthenticated Stored Cross-Site Scripting via Form Calculations

• Severity: medium (CVSS 6.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-12-12 · updated 2026-06-17
• Weakness: CWE-79

Description

The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the calculations parameter in all versions up to, and including, 3.8.19 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• kstover Ninja Forms – The Contact Form Builder That Grows With You: before 3.8.20 — fixed in 3.8.20

How to fix

Upgrade to a fixed version: kstover Ninja Forms – The Contact Form Builder That Grows With You 3.8.20. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/browser/ninja-forms/tags/3.8.18/includes/Admin/Metaboxes/Calculations.php#L26
• https://www.wordfence.com/threat-intel/vulnerabilities/id/c3adf367-0126-4d95-b337-cc3581975113?source=cve

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