This vulnerability, identified as CWE-79, is an unauthenticated cross-site scripting (XSS) issue in Premio Chaty Pro affecting versions up to and including 3.5.8. It arises from improper neutralization of input during web page generation, which enables attackers to inject malicious scripts that execute in the context of the victim's browser. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and low impacts on confidentiality, integrity, and availability.

Successful exploitation can 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, or disruption of service. The vulnerability affects confidentiality, integrity, and availability to a limited extent as indicated by the CVSS vector.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider applying any available workarounds from the vendor or restrict access to the affected application to trusted users only. Monitor official Premio communications for updates.