The vulnerability CVE-2025-30826 affects Pierre Lannoy IP Locator (<= 4.1.0) and is characterized as a DOM-based Cross-site Scripting (XSS) issue caused by improper input neutralization during web page generation. This allows an attacker to inject malicious scripts that execute in the context of the victim's browser. The CVSS 3.1 base score is 6.5, reflecting network attack vector, low attack complexity, requiring privileges and user interaction, with impacts on confidentiality, integrity, and availability at a low level. No patch or vendor advisory is currently available to confirm remediation status.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the affected web application, potentially leading to partial disclosure of information, modification of data, or disruption of service. The impact is rated medium due to the requirement for user interaction and low-level privileges.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should exercise caution when interacting with untrusted inputs in the IP Locator application and consider applying any available workarounds or input validation controls if feasible.