This vulnerability in rhewlif Donation Thermometer (<= 2.2.6) is caused by improper input neutralization during web page generation, resulting in stored cross-site scripting (XSS). An attacker could inject malicious scripts that persist on the affected web pages, potentially impacting confidentiality, integrity, and availability to a limited extent. The CVSS vector indicates network attack vector, low attack complexity, requiring low privileges and user interaction, with a scope change and low impact on confidentiality, integrity, and availability.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of the affected web application, potentially leading to limited disclosure of information, modification of data, or disruption of service. The impact is rated as medium severity based on the CVSS score of 6.5. There are no reports of active exploitation in the wild.

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.