CVE-2026-3891

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.

CVSS v3.1

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

EPSS

25.06% chance of exploitation in the next 30 days, 98th percentile

Nuclei

critical · CWE-434

Published

2026-03-13

Updated

2026-04-08

Proof-of-concept exploits (7)

• joshuavanderpoll/CVE-2026-38917★ · 2026-03-13
• Nxploited/CVE-2026-38916★ · 2026-03-27
• willygailo/CVE-2026-3891-Linux2★ · 2026-05-31
• m4sh-wacker/CVE-2026-3891-Pix-for-WooCommerce-Plugin-Exploit21★ · 2026-07-20
• shinthink/CVE-2026-38914★ · 2026-07-21
• VeronnX666/CVE-2026-38910★ · 2026-07-19
• Ch4120N/CVE-2026-38912★ · 2026-08-03

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-3891.yaml

Metasploit modules (1)

• rapid7/metasploit-framework/blob/master/modules/exploits/multi/http/wp_plugin_pix_unauth_…

ExploitDB entries (1)

• https://www.exploit-db.com/exploits/52642

References

• CVE Record
• NVD entry

Related

• CVE-2021-3129
• CVE-2022-29799
• CVE-2022-29800
• CVE-2022-30190
• CVE-2024-56348
• CVE-2025-14847