Quill Forms | The Best Typeform Alternative | Create Conversational Multi Step Form, Survey, Quiz, Cost Estimation or Donation , CVE-2026-15664

CVE, Research URL: CVE-2026-15664
Home page URL: Security reports for Quill Forms | The Best Typeform Alternative | Create Conversational Multi Step Form, Survey, Quiz, Cost Estimation or Donation
Application: Quill Forms | The Best Typeform Alternative | Create Conversational Multi Step Form, Survey, Quiz, Cost Estimation or Donation
Published on: Sep 19, 2026
Research Description: The Quill Forms | Conversational Multi Step Forms, Surveys & quizzes plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Multiple Choice 'Other' Value in all versions up to, and including, 5.7.1 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 injected script executes in the context of the WordPress admin results view, making administrators the primary target when reviewing submitted form entries.
Affected versions: max 5.7.2.
Status: vulnerable