Vulnerability · Published Nov 2, 2026 · Assigned by Wordfence
CVE-2026-102435Ultra Addons for Contact Form 7 <= 3.5.54 - Unauthenticated PHP Object Injection to Arbitrary File Deletion via CF7 Form Field
Critical 9.8
In plain English
A critical-severity unsafe deserialization in Ultra Addons for Contact Form 7 from themefic. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Official description
The Ultra Addons for Contact Form 7 plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the _getObjAttr function in all versions up to, and including, 3.5.54. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). This requires the PDF Generator add-on to be active and a Contact Form 7 form to be configured for PDF generation, as the WPCF7_Submission POP gadget chain relies on CF7 being present to complete the file deletion via __destruct(). Note: This vulnerability can only be exploited when the PDF generator feature is enabled.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| themefic | Ultra Addons for Contact Form 7 | 0 – through 3.5.54 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/187777a4-3438-489c-ad3b-7e16753189d6?source=cve
- https://plugins.svn.wordpress.org/ultimate-addons-for-contact-form-7/tags/3.5.52/addons/pdf-generator/pdf-generator.php
- https://plugins.trac.wordpress.org/changeset/3738548/ultimate-addons-for-contact-form-7