by Kastro
Paper/Archive/CVE-2026-3891

CVE-2026-3891

linknacional Pix for WooCommerce — Pix for WooCommerce <= 1.5.0 - Unauthenticated Arbitrary File Upload

EPSS 32%CVSS 9.8
critical.is priorityof 100
49
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 98.3.983 × 2019.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
Pix for WooCommerce≤ 1.5.0–CNA

Scores by source

Wordfence (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refwordfence.com/threat-intel/vulnerabilities/id/20188fd3-c330-4c76-912b-72731e14c450?source=cverefplugins.trac.wordpress.org/browser/payment-gateway-pix-for-woocommerce/tags/1.4.0/Includes/LknPaymentPixForWoocommercePixC6.php#L694refplugins.trac.wordpress.org/changeset/3480639/payment-gateway-pix-for-woocommerce#file56