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.
History

Fri, 20 Mar 2026 22:45:00 +0000

Type Values Removed Values Added
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.
Title SiYuan has an Unauthenticated Arbitrary File Read via Path Traversal
Weaknesses CWE-22
CWE-73
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-03-20T22:34:40.051Z

Updated: 2026-03-20T22:34:40.051Z

Reserved: 2026-03-20T16:16:48.970Z

Link: CVE-2026-33476

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-20T23:16:48.137

Modified: 2026-03-20T23:16:48.137

Link: CVE-2026-33476

cve-icon Redhat

No data.