How severe is CVE-2026-3891?

CVE-2026-3891 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 29.7% probability of exploitation in the next 30 days.

CVE-2026-3891: Pix for WooCommerce <= 1.5.0

Q: What is 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.

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.

Severity

CVSS 3.1 · CNA9.8 CRITICAL

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

SSVC · CISA-ADP

Exploitationnone

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
linknacional	Pix for WooCommerce	0 to 1.5.0

References

3 Links

Other references

Record Details

Published

2026-03-13

Last updated

2026-04-08

Assigner (CNA)

Wordfence

Credited to

Alexis Lafontaine

Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

CWE-434 · Unrestricted File Upload

Application Security Tools Penetration Testing Tools

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.