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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| siyuan-note | siyuan | < 3.8.2 | 3.8.2 |
References
- GitHub Security Advisory (GHSA-mmgw-3mx9-cfwp) vendor-advisory
- VulnCheck Advisory: SiYuan before v3.8.2 Path Guard Bypass via Case Mismatch third-party-advisory