This vulnerability in Advanced Typekit 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 when other users access the affected content. The issue affects all versions up to 1.0.1. The CVSS 3.1 base score is 6.5, reflecting network attack vector, low attack complexity, requiring low privileges and user interaction, with partial impact on confidentiality, integrity, and availability. No patch or vendor advisory is currently available, and the product is not a cloud service.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of users of the vulnerable Advanced Typekit application, potentially leading to partial compromise of confidentiality, integrity, and availability of user data or application functionality. However, no known exploits are reported in the wild, and the impact is rated medium severity.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider applying input validation or output encoding workarounds if feasible. Monitor vendor channels for updates and apply patches promptly once available.