CVE-2026-3891
Pix for WooCommerce <= 1.5.0 - Unauthenticated Arbitrary File Upload
- Published
- Mar 13, 2026
- Updated
- Apr 8, 2026
- Assigning CNA
- Wordfence
- Evidence observed
- Aug 17, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HModerate · next 30 days
- Percentile
- 97.9%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
8- CVE-2026-3891Exploit
PoC for CVE-2026-3891 – Unauthenticated File Upload RCE in Pix for WooCommerce ≤ 1.5.0. Automated nonce retrieval, PHP upload, and command execution.
- CVE-2026-3891Exploit
Pix for WooCommerce <= 1.5.0 - Unauthenticated Arbitrary File Upload (CVE-2026-3891) PoC
PoC for CVE-2026-3891 — Unauthenticated Arbitrary File Upload leading to Remote Code Execution in Pix for WooCommerce <= 1.5.0
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