CVE-2025-48143 is a reflected Cross-site Scripting vulnerability in the salesup2019 Formulario de contacto SalesUp! plugin, affecting all versions up to and including 1.0.14. The vulnerability is caused by improper neutralization of user input during web page generation, which allows attackers to inject malicious scripts that execute in the victim's browser when they interact with the vulnerable contact form. The CVSS 3.1 score of 7.1 reflects network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and impacts on confidentiality, integrity, and availability. No patch or vendor advisory is currently available to confirm remediation status.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the victim's browser, potentially leading to theft of sensitive information, session hijacking, or other malicious actions impacting confidentiality, integrity, and availability of user data. The reflected nature of the XSS requires user interaction to trigger the exploit. 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 consider applying input validation or output encoding workarounds if feasible. Monitoring vendor channels for updates is recommended. No vendor advisory or patch links are currently provided.