CVE-2023-1835: Ninja Forms < 3.6.22 - Reflected XSS

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-05-15 · updated 2026-06-17

Description

The Ninja Forms Contact Form WordPress plugin before 3.6.22 does not properly escape user input before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin

Affected products

kstover Ninja Forms – The Contact Form Builder That Grows With You: before 3.6.22 — fixed in 3.6.22

How to fix

Upgrade to a fixed version: kstover Ninja Forms – The Contact Form Builder That Grows With You 3.6.22. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/b5fc223c-5ec0-44b2-b2f6-b35f9942d341
https://wpscan.com/vulnerability/b5fc223c-5ec0-44b2-b2f6-b35f9942d341

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