CVE-2026-109997

HighCVSS 7.2/10Last modified Nov 2, 2026

Description

The Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'formData.extra' parameter in all versions up to, and including, 3.15.5 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. The nf_ajax_submit endpoint issues a valid nonce to any requester on failure, effectively neutralizing the nonce check and making exploitation trivially achievable in a single unauthenticated request.

Metrics

CVSS 3.1 7.2/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

Published: Oct 31, 2026
Last modified: Nov 2, 2026
NVD status: Deferred

Related CVEs from 2026

CVE-2026-1099987.2The Mang Board plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'content' parameter in all versions up to, and incl CVE-2026-1099997.2The AI Marketing Expert — AI Email Marketing, AI Content Generator, SEO Analyzer, AI Workflow Automation, Social Media & Ai Chatbot plugin f CVE-2026-110008.8Use after free in Fonts in Google Chrome on Linux prior to 149.0.7827.53 allowed a remote attacker to execute arbitrary code inside a sandbo CVE-2026-1100015.4The FV Flowplayer Video Player plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment (shortcode attribute 'alig CVE-2026-1100029.8The Snazzy Social Media Feed plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.5 via the (CVE-2026-1100039.3A vulnerability in the administration REST interface of Azul Payara allows a remote, unauthenticated attacker to bypass secure-admin remote-CVE-2026-1100046.5The wpForo Forum plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the theme_delete CVE-2026-1100058.8The `periphery` agent's container-management functionality of Komodo version 2.2.0 contains an OS command injection vulnerability. An authen CVE-2026-1100084.2@fastify/oauth2 is a Fastify wrapper for OAuth2 login flows. In versions 7.2.0 through 8.3.1, the state and code-verifier cookies are set wi CVE-2026-110016.5Inappropriate implementation in Payments in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who convinced a user to engage in CVE-2026-1100104.8The MB Custom Post Types & Custom Taxonomies WordPress plugin before 2.12.3 does not perform any capability or authentication check before a CVE-2026-1100112.7The MB Custom Post Types & Custom Taxonomies WordPress plugin before 2.12.3 does not perform a capability check in its export feature, allow