This vulnerability (CVE-2026-48871) is an unauthenticated cross-site scripting (XSS) flaw in MW WP Form versions up to 5.1.3. It is caused by improper input neutralization during web page generation, classified under CWE-79. The CVSS 3.1 base score is 7.1, indicating high severity, with network attack vector, low attack complexity, no privileges required, and requiring user interaction. The impact includes partial confidentiality, integrity, and availability loss. No vendor advisory or patch is currently available, and no known exploits have been reported.

Successful exploitation allows remote attackers to execute arbitrary scripts in the context of the affected web application without authentication. This can lead to partial compromise of confidentiality, integrity, and availability of the application and its users. The vulnerability can be triggered by tricking a user into interacting with crafted content, potentially leading to session hijacking or other malicious actions.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, consider implementing web application firewall (WAF) rules to detect and block XSS payloads targeting MW WP Form. Avoid exposing vulnerable versions publicly and monitor for updates from the vendor.