{"schemaVersion":3,"id":"CVE-2026-33476","aliases":["GHSA-hhgj-gg9h-rjp7","GO-2026-4802"],"status":"published","duplicateOf":null,"title":null,"description":"SiYuan is a personal knowledge management system. Prior to version 3.6.2, the Siyuan kernel exposes an unauthenticated file-serving endpoint under `/appearance/*filepath.` Due to improper path sanitization, attackers can perform directory traversal and read arbitrary files accessible to the server process. Authentication checks explicitly exclude this endpoint, allowing exploitation without valid credentials. 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