CVE-2026-33476

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. Version 3.6.2 fixes this issue.

• CWE-22
• CWE-73

• https://github.com/siyuan-note/siyuan/commit/009bb598b3beccc972aa5f1ed88b3b224326bf2aPatch
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hhgj-gg9h-rjp7Exploit, Vendor Advisory
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hhgj-gg9h-rjp7Exploit, Vendor Advisory

Published

Mar 20, 2026

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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