CVE-2026-85580
Medium · 6.5CVSS
6.5
EPSS
0.6%
Published
Sep 4, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
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