This vulnerability in Dylan Kuhn Geo Mashup (<= 1.13.12) involves improper input sanitization during web page generation, leading to stored cross-site scripting (XSS). An attacker can inject malicious scripts that persist and execute in the context of users visiting affected pages. The CVSS 3.1 vector (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L) reflects network attack vector, low attack complexity, low privileges required, user interaction needed, scope changed, and low impact on confidentiality, integrity, and availability.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of affected users, potentially leading to session hijacking, defacement, or other malicious actions impacting confidentiality, integrity, and availability at a low level. The scope change indicates the vulnerability affects components beyond the initially vulnerable component.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, users should consider limiting exposure by restricting access to the vulnerable plugin or applying web application firewall (WAF) rules to detect and block XSS payloads. Monitor official sources for updates regarding fixes.