Security Advisory

CVE-2026-85580

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-09-04 11:29:49

Last updated 2026-09-04 14:07:28

Assigner VulnCheck

CVSS score 7.1

State PUBLISHED

Description

SiYuan versions before v3.8.2 contain a path guard bypass vulnerability in the MCP file-access handler that uses case-sensitive matching on Linux filesystems. Attackers can read the protected publishAccess.json file by requesting case-variant paths like PublishAccess.json to disclose sensitive publish-access configuration and metadata.

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