← Vulnerability feed

Vulnerability record · CVE-2023-6133 · published 15 November 2023

CVE-2023-6133: Incsub forminator unrestricted file upload vulnerability

Incsub · Forminator

The Forminator plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient blacklisting on the 'forminator_allowed_mime_types' function in versions up to, and including, 1.27.0. This makes it possible for authenticated attackers with administrator-level capabilities or above to upload arbitrary files on the affected site's server, but due to the htaccess configuration, remote code cannot be executed.

4.9 CVSS 3.1 Medium EPSS 0.86% · top 43.0% CWE-434 · Unrestricted file upload
4.9CVSS 3.1 base score
0.86%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

The Forminator plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient blacklisting on the 'forminator_allowed_mime_types' function in versions up to, and including, 1.27.0. This makes it possible for authenticated attackers with administrator-level capabilities or above to upload arbitrary files on the affected site's server, but due to the htaccess configuration, remote code cannot be executed.

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://plugins.trac.wordpress.org/browser/forminator/tags/1.27.0/library/fields/upload.php#L356 Issue Tracking
https://plugins.trac.wordpress.org/browser/forminator/tags/1.27.0/library/fields/upload.php#L372 Issue Tracking
https://plugins.trac.wordpress.org/changeset/2995007/forminator/trunk/library/helpers/helper-fields.php#file0 Patch
https://www.wordfence.com/threat-intel/vulnerabilities/id/13cfa202-ab90-46c0-ab53-00995bfdcaa3?source=cve Third Party Advisory
https://plugins.trac.wordpress.org/browser/forminator/tags/1.27.0/library/fields/upload.php#L356 Issue Tracking
https://plugins.trac.wordpress.org/browser/forminator/tags/1.27.0/library/fields/upload.php#L372 Issue Tracking
https://plugins.trac.wordpress.org/changeset/2995007/forminator/trunk/library/helpers/helper-fields.php#file0 Patch
https://www.wordfence.com/threat-intel/vulnerabilities/id/13cfa202-ab90-46c0-ab53-00995bfdcaa3?source=cve Third Party Advisory

Track CVE-2023-6133 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-4596Incsub forminator unrestricted file upload vulnerabilityThe Forminator plugin for WordPress is vulnerable to arbitrary file uploads due to file type validation occurring after a file has been uploaded to t…EPSS 14%8.8CVE-2025-6464Incsub forminator deserialization of untrusted data vulnerabilityThe Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to PHP Object Injection in all versions up…EPSS 0.57%8.8CVE-2025-6463Incsub forminator vulnerabilityThe Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to arbitrary file deletion due to insuffic…EPSS 15%7.5CVE-2024-7389Incsub forminator insufficiently protected credentials vulnerabilityThe Forminator plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.29.1 via class-forminator…EPSS 0.66%7.2CVE-2024-31077Incsub forminator sql injection vulnerabilityForminator prior to 1.29.3 contains a SQL injection vulnerability. If this vulnerability is exploited, a remote authenticated attacker with an admini…EPSS 30%6.5CVE-2019-9568Incsub forminator sql injection vulnerabilityThe "Forminator Contact Form, Poll & Quiz Builder" plugin before 1.6 for WordPress has SQL Injection via the wp-admin/admin.php?page=forminator-entri…EPSS 1.6%6.1CVE-2024-45625Incsub forminator cross-site scripting vulnerabilityCross-site scripting vulnerability exists in Forminator versions prior to 1.34.1. If this vulnerability is exploited, an arbitrary script may be exec…EPSS 0.43%6.1CVE-2024-1794Incsub forminator cross-site scripting vulnerabilityThe Forminator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via an uploaded file (e.g. 3gpp file) in all versions up to, and inc…EPSS 0.53%

Source: NIST National Vulnerability Database (record CVE-2023-6133), CISA KEV, FIRST EPSS (scores of 2026-10-03). This page is refreshed as NVD updates the record.