CVE-2026-75091
Received Received - Intake

Stored XSS in Quill Forms WordPress Plugin

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: Wordfence

Description
The Quill Forms | Conversational Multi Step Forms, Surveys & quizzes plugin for WordPress is vulnerable to Stored Cross-Site Scripting 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.

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Meta Information

Published
2026-08-18
Last Modified
2026-08-18
Generated
2026-08-18
AI Q&A
2026-08-18
EPSS Evaluated
N/A
NVD
CVE-2026-75091
EUVD
EUVD-2026-60570

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
quill_forms conversational_multi_step_forms to 5.7.1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This vulnerability is a Stored Cross-Site Scripting (XSS) issue in the Quill Forms WordPress plugin. It allows unauthenticated attackers to inject malicious scripts into web pages due to insufficient input sanitization and output escaping. These scripts execute when users access the compromised pages.

Detection Guidance

This vulnerability involves Stored Cross-Site Scripting in the Quill Forms WordPress plugin. To detect it, inspect WordPress sites using this plugin for versions up to 5.7.1. Check for suspicious scripts in form inputs or page content. Use WordPress admin to review plugin versions and scan for unauthorized scripts in posts or pages.

Impact Analysis

An attacker could steal user sessions, redirect users to malicious sites, or perform actions on their behalf. It may also lead to defacement of websites or theft of sensitive data like cookies or form submissions.

Compliance Impact

This vulnerability could lead to data breaches, violating GDPR and HIPAA requirements for data protection. Organizations may face fines or legal consequences if user data is compromised due to this flaw.

Mitigation Strategies

Update the Quill Forms plugin to the latest version beyond 5.7.1 immediately to patch the Stored Cross-Site Scripting vulnerability. Disable the plugin temporarily if an update is not immediately available.

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