CVE-2026-33476
HIGH
b3log
NVD
CVSS Score
7.5
Severity
HIGH
Published
Mar 20, 2026
Vendor
b3log
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. Version 3.6.2 fixes this issue.