CVE-2026-3891
Pix for WooCommerce <= 1.5.0 - Unauthenticated Arbitrary File Upload
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.
INFO
Published Date :
March 13, 2026, 7:55 p.m.
Last Modified :
March 16, 2026, 2:53 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-3891
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | MITRE-CVE | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update the Pix for WooCommerce plugin to the latest version.
- Verify plugin settings for proper file validation.
- Remove any unauthorized uploaded files.
Public PoC/Exploit Available at Github
CVE-2026-3891 has a 5 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-3891.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-3891 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-3891
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Pix for WooCommerce <= 1.5.0 - Unauthenticated Arbitrary File Upload
Python Hack
Demonstrate an unauthenticated arbitrary file upload exploit in Pix for WooCommerce plugin versions up to 1.5.0 using exposed AJAX endpoints.
cve cve-2026-3891 exploit pentest-tool pentesting python rce security vulnerabilities vulnerability wordpress wordpress-exploit
Python Dockerfile Shell PHP
Pix for WooCommerce <= 1.5.0 - Unauthenticated Arbitrary File Upload (CVE-2026-3891) PoC
cve exploit exploits pentest-tool pentesting python rce security security-tools vulnerabilities vulnerability wordpress wordpress-exploit cve-2026-3891
Python Dockerfile Shell PHP
CVE POC repo 자동 수집기
Python
📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.
security cve exploit poc vulnerability
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-3891 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-3891 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Mar. 13, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-434 Added Reference https://plugins.trac.wordpress.org/browser/payment-gateway-pix-for-woocommerce/tags/1.4.0/Includes/LknPaymentPixForWoocommercePixC6.php#L694 Added Reference https://plugins.trac.wordpress.org/changeset/3480639/payment-gateway-pix-for-woocommerce#file56 Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/20188fd3-c330-4c76-912b-72731e14c450?source=cve