CVE-2026-94504
High
Description
Ninja Forms 3.15.3 stores an anonymous non-RTE textarea value and renders it without safe HTML encoding in the legacy submission editor. An attacker can break out of the textarea with stored script. When an Administrator opens the attacker-known direct submission URL, the script runs in the WordPress admin origin.
SeverityHigh
CVSS7.2
Exploit probability—
ProductNinja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder
PublishedSep 22, 2026
First seenSep 22, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| kstover Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder | v ≤ 3.15.3 | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.