HIGH 7.1 NVD
CVE-2026-85580
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. A
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.
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-mmgw-3mx9-cfwp
- https://www.vulncheck.com/advisories/siyuan-before-3.8.2-path-guard-bypass-via-case-mismat
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-mmgw-3mx9-cfwp
This high severity vulnerability with a CVSS score of 7.1 was published on 2026-09-04 via NVD.
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