SiYuan before v3.8.0 Incomplete Path Blocklist via MCP file tool
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-863.
Summary
SiYuan versions before v3.8.0 contain an incomplete path blocklist in the MCP file tool that fails to restrict access to sensitive workspace files protected by the HTTP API. Authenticated administrators can read plaintext publish-mode passwords from data/.siyuan/publishAccess.json and access other sensitive files like data/templates and data/snippets/conf.json.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| siyuan-note | siyuan | before 3.8.0 | 3.8.0 | Patch available | CNA |
| — | github.com/siyuan-note/siyuan/kernel (Go) | before 0.0.0-20260808051406-3542530c505f | 0.0.0-20260808051406-3542530c505f | Patch available | GHSA-c8r8-95hg-mp34 |
- siyuan Vendorsiyuan-note Affected before 3.8.0 Fixed in 3.8.0 Patch available CNA
- github.com/siyuan-note/siyuan/kernel (Go) Vendor— Affected before 0.0.0-20260808051406-3542530c505f Fixed in 0.0.0-20260808051406-3542530c505f Patch available GHSA-c8r8-95hg-mp34
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:* | — | — | siyuan-note |
- cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:* Versions — — ·siyuan-note
Remediation
- Fix · CNA siyuan (siyuan-note) Fixed in 3.8.0
- Fix · GHSA-c8r8-95hg-mp34 github.com/siyuan-note/siyuan/kernel (Go) Fixed in 0.0.0-20260808051406-3542530c505f Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
siyuan-note siyuan 3.8.0
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-42630 SiYuan before v3.8.0 Secret Exfiltration via http_request URLPriority LOW 31
Timeline
- 2026-10-02 Threatist record created from CVE-2026-60083
- 2026-10-03 Alias added: GHSA-rp7c-4prv-9rrg
- 2026-10-27 Alias added: GHSA-c8r8-95hg-mp34
References
More siyuan-note vulnerabilities
- TI-2026-48492 SiYuan before v3.7.3 SQL Injection via searchDocs CVSS 4.0CRITICAL 9.9
- TI-2026-48491 SiYuan before v3.7.3 SQL Injection via searchEmbedBlock CVSS 4.0CRITICAL 9.9
- TI-2026-48490 SiYuan before v3.7.3 SQL Injection via fullTextSearchAssetContent CVSS 4.0CRITICAL 9.9
- TI-2026-47010 SiYuan before v3.7.2 Unauthenticated Administrator Takeover via MCP CVSS 4.0CRITICAL 10.0
- TI-2026-26050 SiYuan has directory traversal within its publishing service CVSS 3.1CRITICAL 9.8
- TI-2026-25256 SiYuan: Authorization Bypass Allows Arbitrary SQL Execution via Search API CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-60083 · CVE Program
- CVE-2026-60083 · NVD
- FIRST EPSS
- GHSA-c8r8-95hg-mp34 · GitHub Advisory Database · CC BY 4.0
- GHSA-rp7c-4prv-9rrg · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences