What’s Vulnerable › Vulnerabilities

CVE-2021-25056: Ninja Forms < 3.6.10 - Admin+ Stored Cross-Site Scripting

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-07-04 · updated 2026-06-17
• Weakness: CWE-79

Description

The Ninja Forms Contact Form WordPress plugin before 3.6.10 does not sanitise and escape field labels, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.

Affected products

• kstover Ninja Forms – The Contact Form Builder That Grows With You: before 3.6.10 — fixed in 3.6.10

How to fix

Upgrade to a fixed version: kstover Ninja Forms – The Contact Form Builder That Grows With You 3.6.10. Check the vendor advisory for mitigations.

References

• https://wpscan.com/vulnerability/795acab2-f621-4662-834b-ebb6205ef7de
• https://wpscan.com/vulnerability/795acab2-f621-4662-834b-ebb6205ef7de

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