This vulnerability (CVE-2026-39449) is an unauthenticated Cross-Site Scripting (XSS) issue in Contact Form to Any API versions up to and including 3.0.3. It arises from improper neutralization of input during web page generation, classified under CWE-79. 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 scope changed. The impacts include low confidentiality, integrity, and availability losses. There is no vendor advisory or patch information available at this time, and the product is not a cloud service.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the affected web application, potentially leading to partial disclosure of sensitive information, modification of data, and disruption of service availability. The CVSS vector indicates that the attack can be performed remotely without privileges but requires user interaction. The scope is changed, meaning the vulnerability affects components beyond the vulnerable component itself.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider implementing input validation and output encoding as temporary mitigations to reduce the risk of XSS. Monitor vendor channels for updates and apply patches promptly once released.