HT Contact Form <= 2.8.2 - Unauthenticated Stored Cross-Site Scripting via File Upload Field
Affected versions: *-2.8.2
Vulnerability type: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected software, patched versions and attribution
The HT Contact Form – Drag & Drop Form Builder for WordPress plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'file_upload' parameter in all versions up to, and including, 2.8.2 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. Exploitation requires the 'Store Submissions' setting to be enabled, as this controls whether unsanitized field values are persisted to the database and subsequently rendered via dangerouslySetInnerHTML in the admin entry viewer.
HT Contact Form – Drag & Drop Form Builder for WordPress
Affected versions: *-2.8.2
Patched versions: 2.8.3
Researcher credit: Azril Fathoni (kiseki)
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- Published
- May 27, 2026
- CVSS
- 7.2