This vulnerability in grafeon Notifikácie.sk (versions <= 1.0) is a reflected Cross-site Scripting (XSS) flaw caused by improper neutralization of input during web page generation. An attacker can craft malicious input that is reflected in the web page without proper sanitization, enabling script execution in the victim's browser. The CVSS 3.1 base score is 7.1, indicating high severity with network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and impacts on confidentiality, integrity, and availability at a low level.

Successful exploitation can allow an attacker to execute arbitrary scripts in the context of the victim's browser, potentially leading to information disclosure, modification of data, or disruption of service. The CVSS vector indicates partial impacts on confidentiality, integrity, and availability. No known exploits in the wild have been reported, so the immediate risk may be limited but remains significant due to the nature of reflected XSS.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch or 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. Developers should review input handling and apply proper output encoding and input validation to mitigate this vulnerability.