Vulnerability · Published Oct 21, 2026 · Assigned by Patchstack
CVE-2026-110899WordPress Ninja Forms plugin <= 3.15.5 - Cross Site Scripting (XSS) vulnerability
High 7.1
In plain English
A high-severity cross-site scripting in Ninja Forms from Kevin Stover. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.2%top 88.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Kevin Stover Ninja Forms ninja-forms allows Stored XSS.This issue affects Ninja Forms: from n/a through 3.15.5.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Kevin Stover | Ninja Forms | 0 – through 3.15.5 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L