The vulnerability CVE-2025-48152 in dimafreund Rentsyst (<= 2.0.100) is a reflected cross-site scripting (XSS) issue caused by improper input neutralization during web page generation. This allows attackers to inject malicious scripts that execute when a victim interacts with crafted web content. 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 low levels.

Successful exploitation of this reflected XSS vulnerability can lead to execution of arbitrary scripts in the context of the victim's browser, potentially resulting in theft of sensitive information, session hijacking, or other malicious actions impacting confidentiality, integrity, and availability to a limited extent. The scope change indicates that the vulnerability affects resources beyond the initially vulnerable component.

No official patch or remediation information is currently available for this vulnerability. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, users should exercise caution with untrusted input and consider implementing web application firewall (WAF) rules to detect and block reflected XSS attempts if possible.