CVE-2026-15664 Quill Forms | Conversational Multi Step Forms, Surveys & quizzes <= 5.7.1 - Unauthenticated Stored Cross-Site Scripting via Multiple Choice 'Other' Value

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 f...

CVE-2026-15664

Quill Forms (Conversational Multi Step Forms, Surveys & Quizzes) for WordPress is affected by a stored cross-site scripting vulnerability in all versions up to and including 5.7.1 . The flaw stems from insufficient input sanitization and output escaping in the Multiple Choice "Other" field . An u...

EUVD-2026-83574

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 f...

PT-2026-95780

Name of the Vulnerable Software and Affected Versions Quill Forms | Conversational Multi Step Forms, Surveys & quizzes versions prior to 5.7.2 Description Insufficient input sanitization and output escaping allow unauthenticated attackers to perform Stored Cross-Site Scripting XSS, a technique...

CVE-2026-15664: Improper Neutralization of Input During Web Page Generation

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 f...