This vulnerability in Tamara Checkout involves improper neutralization of input 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' browsers, potentially impacting confidentiality, integrity, and availability. The affected versions are all versions prior to 1.9.9.1. 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 victim's browser, 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. There are no reports of exploitation in the wild.

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