CVE-2026-90438: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in kstover Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder
The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Paragraph Text (RTE) Field Submission in all versions up to, and including, 3.15.4 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. This is only exploitable when the targeted Paragraph Text field has the Rich Text Editor (RTE) option enabled.
CVE-2026-90438: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in kstover Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder
Description
The Ninja Forms – The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Paragraph Text (RTE) Field Submission in all versions up to, and including, 3.15.4 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. This is only exploitable when the targeted Paragraph Text field has the Rich Text Editor (RTE) option enabled.
CVSS v3.1
Score 7.2high
Affected software
kstover
Ninja Forms – Contact Form Builder with Calculators, Quizzes, Signatures & AI Form Builder
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-09-11T20:06:06.961Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abf453da43b0b3b89764bc5
Added to database: 10/02/2026, 05:46:37 UTC
Last updated: 10/02/2026, 05:46:37 UTC
Views: 1
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