CVE-2026-57806: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in drfuri Martfury - WooCommerce Marketplace WordPress Theme

The vulnerability CVE-2026-57806 in the Martfury WooCommerce Marketplace WordPress Theme is a reflected cross-site scripting (XSS) flaw caused by improper input neutralization during web page generation. This allows attackers to inject malicious scripts that execute when a victim views a crafted URL or input, potentially leading to information disclosure, manipulation of site content, or denial of service. The affected versions include all releases from 0 through 3.3.9. The CVSS 3.1 base score is 7.1, indicating a high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and impacts on confidentiality, integrity, and availability.

Successful exploitation of this vulnerability can allow an attacker to execute arbitrary scripts in the context of the victim's browser session, potentially leading to partial disclosure of sensitive information, unauthorized modification of web content, or disruption of service. The reflected XSS nature means the attack requires user interaction, such as clicking a malicious link.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should exercise caution with untrusted input and consider implementing web application firewall (WAF) rules to detect and block reflected XSS attempts.