CVE-2026-15664: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in mdmag Quill Forms | Conversational Multi Step Forms, Surveys & quizzes
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.
AI Analysis
Technical Summary
CVE-2026-15664 is a stored cross-site scripting vulnerability in the Quill Forms | Conversational Multi Step Forms, Surveys & quizzes WordPress plugin by mdmag. The flaw arises from insufficient input sanitization and output escaping of the 'Other' value in multiple choice fields. Attackers can inject arbitrary scripts that execute when administrators view the injected form entries, potentially compromising admin sessions or data. The vulnerability affects all versions up to and including 5.7.1.
Potential Impact
An unauthenticated attacker can inject malicious scripts that execute in the WordPress admin interface when administrators view form results. This can lead to session hijacking, unauthorized actions, or data exposure within the admin context. The vulnerability does not impact availability but compromises confidentiality and integrity of the admin environment.
Mitigation Recommendations
No patch or official fix is currently documented for this vulnerability. Users should monitor vendor advisories for updates. Until a fix is available, restrict access to the WordPress admin interface to trusted users only and consider disabling or limiting use of the affected plugin. Avoid opening form results from untrusted sources.
CVE-2026-15664: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in mdmag Quill Forms | Conversational Multi Step Forms, Surveys & quizzes
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.
CVSS v3.1
Score 7.2high
Affected software
mdmag
Quill Forms | Conversational Multi Step Forms, Surveys & quizzes
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-15664 is a stored cross-site scripting vulnerability in the Quill Forms | Conversational Multi Step Forms, Surveys & quizzes WordPress plugin by mdmag. The flaw arises from insufficient input sanitization and output escaping of the 'Other' value in multiple choice fields. Attackers can inject arbitrary scripts that execute when administrators view the injected form entries, potentially compromising admin sessions or data. The vulnerability affects all versions up to and including 5.7.1.
Potential Impact
An unauthenticated attacker can inject malicious scripts that execute in the WordPress admin interface when administrators view form results. This can lead to session hijacking, unauthorized actions, or data exposure within the admin context. The vulnerability does not impact availability but compromises confidentiality and integrity of the admin environment.
Mitigation Recommendations
No patch or official fix is currently documented for this vulnerability. Users should monitor vendor advisories for updates. Until a fix is available, restrict access to the WordPress admin interface to trusted users only and consider disabling or limiting use of the affected plugin. Avoid opening form results from untrusted sources.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-07-13T20:41:30.078Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aae3e0055bf5e2cf54897cc
Added to database: 09/19/2026, 07:47:12 UTC
Last enriched: 09/19/2026, 08:01:36 UTC
Last updated: 09/19/2026, 22:12:52 UTC
Views: 13
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