The vulnerability CVE-2025-26560 affects the WP Contact Form III plugin by KKWangen, specifically versions up to 1.6.2d. It is a reflected cross-site scripting (XSS) issue caused by improper input neutralization during web page generation. This allows attackers to inject malicious scripts that execute when a user interacts with the affected web page, potentially compromising user data and session integrity. The CVSS v3.1 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, potentially leading to theft of user credentials, session hijacking, or other malicious actions affecting confidentiality, integrity, and availability. However, no known exploits are currently reported in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider disabling or replacing the affected plugin to mitigate risk. Additionally, applying web application firewall (WAF) rules that detect and block reflected XSS payloads may provide temporary protection.