CVE-2026-3891

Pix for WooCommerce <= 1.5.0 - Unauthenticated Arbitrary File Upload

CVSS 9.8 CRITICALEPSS 0.8%CWE-434

Vexday Risk Score

28Baixo

Decisão SSVC (CISA)

Track

Sem sinal de exploração → monitorar

CVSS 9.8EPSS 0.8%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

13 mar 2026Publicada no NVD

Recomendação: Monitorar — sem sinal de exploração no momento.

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

Produtos afetados

linknacional · Pix for WooCommerce

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Referências

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 https://www.wordfence.com/threat-intel/vulnerabilities/id/20188fd3-c330-4c76-912b-72731e14c450?source=cve