CVE-2026-33476

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/20/2026

Last Modified3/23/2026

Sourcenvd

Honeypot Sightings0

Affected Products

b3log:siyuan

Weaknesses (CWE)

CWE-22CWE-73

References

https://github.com/siyuan-note/siyuan/commit/009bb598b3beccc972aa5f1ed88b3b224326bf2a(security-advisories@github.com)

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hhgj-gg9h-rjp7(security-advisories@github.com)

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hhgj-gg9h-rjp7(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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