This vulnerability (CVE-2025-25129) in NotFound Callback Request arises from improper input sanitization leading to reflected Cross-site Scripting (CWE-79). An attacker can craft a malicious request that causes the web application to generate a response containing executable script code. The affected product versions include all up to 1.4. The CVSS 3.1 vector indicates network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and impacts on confidentiality, integrity, and availability. No official patch or remediation level has been provided by the vendor or authoritative sources.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the victim's browser, potentially leading to information disclosure, session hijacking, or other client-side impacts. The reflected nature means the attack requires user interaction, such as clicking a crafted link. The vulnerability affects confidentiality, integrity, and availability to a limited extent as per the CVSS vector. No known active exploitation has been reported.

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. Monitor vendor channels for updates regarding patches or official mitigations.