Forminator Forms <= 1.56.1 - Unauthenticated Arbitrary File Upload via Forged Upload Field Configuration
| CVE | CVE-2026-15748 |
|---|---|
| CVSS | 9.8 (Critical) |
| Publicly Published | August 17, 2026 |
| Last Updated | August 18, 2026 |
| Researcher |
daroo
|
Description
The Forminator Forms plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 1.56.1 via the handle_file_upload function. This is due to insufficient file type validation in handle_file_upload, where the dangerous-extension blocklist performs exact-key matching that is bypassed by pipe-alternative MIME type keys, combined with a public submission handler that trusts attacker-controlled upload field configuration injected via a forged Select field value. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible.
Learn more about Arbitrary File Upload vulnerabilities and how to prevent them.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for Forminator Forms – Contact Form, Payment Form & Custom Form Builder
| Software Type | Plugin |
|---|---|
| Software Slug | forminator (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 1.56.2, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Forminator Forms – Contact Form, Payment Form & Custom Form Builder
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