The stored XSS vulnerability exists in Note permissions handling. Analysis focuses on:

1. Input processing during permission configuration (setNotePermissions) where malicious payloads would be accepted
2. Output generation when displaying permissions (getNotePermissions) where unsanitized data would be rendered

Though exact patch details are unavailable, the CVE description explicitly calls out Note permissions as the attack vector. These functions represent the most likely data flow path for the vulnerability based on Apache Zeppelin's architecture and standard XSS patterns in Java web applications.