Ultra Addons for Contact Form 7 <= 3.5.54 - Unauthenticated Stored Cross-Site Scripting via Form File Uploads
- ID
- WPSEC-2026-0775
- Plugin
- Ultra Addons for Contact Form 7 (ultimate-addons-for-contact-form-7)
- Affected
- all versions before 3.5.55
- Remediation
- Update to 3.5.55 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-10-11
- Attack surface
- Ultra Addons for Contact Form 7 on WPSec AttackSurface
- Fix released
- Published
Description
The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via form file uploads in all versions up to, and including, 3.5.54. This is due to insufficient content validation of text-type uploads and the database addon copying uploaded files into the publicly accessible uacf7-uploads directory without a file extension and without any protection against MIME sniffing. This makes it possible for unauthenticated attackers to upload files containing HTML or script that execute in the browser of a user who accesses the stored file, such as an administrator reviewing submissions.
References
- https://wpsec.com/vuln/WPSEC-2026-0775/
- https://plugins.svn.wordpress.org/ultimate-addons-for-contact-form-7/tags/3.5.55/
- https://wordpress.org/plugins/ultimate-addons-for-contact-form-7/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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