Vulnerability · Published Mar 13, 2026 · Assigned by Wordfence
CVE-2026-3891Pix for WooCommerce <= 1.5.0 - Unauthenticated Arbitrary File Upload
Critical 9.8
In plain English
A critical-severity unrestricted file upload in Pix for WooCommerce from linknacional. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 32.4% (higher than 98% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, Nuclei, public proof-of-concept code.
Official description
The Pix for WooCommerce plugin for WordPress is vulnerable to arbitrary file uploads due to missing capability check and missing file type validation in the 'lkn_pix_for_woocommerce_c6_save_settings' function in all versions up to, and including, 1.5.0. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| linknacional | Pix for WooCommerce | 0 – through 1.5.0 |
Weakness: CWE-434 · 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/20188fd3-c330-4c76-912b-72731e14c450?source=cve
- https://plugins.trac.wordpress.org/browser/payment-gateway-pix-for-woocommerce/tags/1.4.0/Includes/LknPaymentPixForWoocommercePixC6.php#L694
- https://plugins.trac.wordpress.org/changeset/3480639/payment-gateway-pix-for-woocommerce#file56