This vulnerability in alexvtn Chatbox Manager (<= 1.2.6) involves improper input sanitization during web page generation, leading to stored cross-site scripting (XSS). An attacker could inject malicious scripts that persist on the server and execute when other users access the affected content. The CVSS 3.1 base score is 6.5, reflecting network attack vector, low attack complexity, requiring low privileges and user interaction, with impacts on confidentiality, integrity, and availability.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of other users, potentially leading to data disclosure, modification, or disruption of service. The impact is rated medium based on the CVSS score and the nature of stored XSS vulnerabilities.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider applying input validation and output encoding controls where possible to mitigate stored XSS risks. Monitor vendor channels for updates.