This vulnerability in bpmn.io (<= 1.0) 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 application and execute when viewed by other users. The CVSS vector indicates the attack requires network access, low attack complexity, privileges, and user interaction, with impacts on confidentiality, integrity, and availability at a low to medium level.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of other users, 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. Until an official fix is available, users should apply standard XSS mitigations such as input validation and output encoding where possible. Monitor vendor channels for updates and apply patches promptly once released.