CVE-2026-109997

The record

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.

Affected packages

Related vulnerabilities

• CVE-2026-115541 HumHub Community Edition 1.19.0 contains a stored cross-site scripting vulnerability in… CWE-79
• CVE-2026-82160 Dell Wyse Management Suite, versions prior to 2609.0.0.155, contain an Improper… CWE-79
• CVE-2026-82161 Dell Wyse Management Suite, versions prior to 2609.0.0.155, contain an Improper… CWE-79
• CVE-2026-82158 Dell Wyse Management Suite, versions prior to 2609.0.0.155, contain an Improper… CWE-79
• CVE-2026-82159 Dell Wyse Management Suite, versions prior to 2609.0.0.155, contain an Improper… CWE-79
• CVE-2025-71451 Vembu BDRSuite before 7.6.0 contains an unauthenticated cross-site scripting… CWE-79
• CVE-2025-71452 Vembu BDRSuite before 7.6.0 contains an unauthenticated cross-site scripting… CWE-79
• CVE-2026-63197 traQ is a messenger application built for Digital Creators Club traP. CWE-79