This vulnerability in fatcatapps GetResponse Forms (<= 2.6.0) involves improper input sanitization during web page generation, leading to stored cross-site scripting (XSS). An attacker could inject malicious scripts that are stored and later executed in the context of users viewing the affected forms. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requiring low privileges and user interaction, with a scope change and impacts on confidentiality, integrity, and availability at a low level.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of users interacting with the vulnerable forms, potentially leading to information disclosure, session hijacking, or other impacts on confidentiality, integrity, and availability. The CVSS score of 6.5 reflects a medium impact level. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should monitor vendor communications for updates. Until a fix is available, consider applying input validation or sanitization controls at the application or web server level to mitigate stored XSS risks.