SiYuan has a Full-Read SSRF via /api/network/forwardProxy
Priority HIGH 71CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
SiYuan is a personal knowledge management system. Prior to 3.6.0, the /api/network/forwardProxy endpoint allows authenticated users to make arbitrary HTTP requests from the server. The endpoint accepts a user-controlled URL and makes HTTP requests to it, returning the full response body and headers. There is no URL validation to prevent requests to internal networks, localhost, or cloud metadata services. This vulnerability is fixed in 3.6.0.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00376 31st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed siyuan (siyuan-note): 3.6.0github.com/siyuan-note/siyuan/kernel (Go): 3.6.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
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 3.6.0 | 3.6.0 | Patch available | CNA |
| — | github.com/siyuan-note/siyuan/kernel (Go) | before 3.6.0 | 3.6.0 | Patch available | GHSA-56cv-c5p2-j2wg |
- siyuan Vendorsiyuan-note Affected before 3.6.0 Fixed in 3.6.0 Patch available CNA
- github.com/siyuan-note/siyuan/kernel (Go) Vendor— Affected before 3.6.0 Fixed in 3.6.0 Patch available GHSA-56cv-c5p2-j2wg
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:* | before 3.6.0 | Vulnerable | siyuan-note |
- cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:* Versions before 3.6.0 Vulnerable ·siyuan-note
Remediation
- Fix · CNA siyuan (siyuan-note) Fixed in 3.6.0
- Fix · GHSA-56cv-c5p2-j2wg github.com/siyuan-note/siyuan/kernel (Go) Fixed in 3.6.0 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-32110
- 2026-10-03 Alias added: GHSA-56cv-c5p2-j2wg
- 2026-11-05 1 new reference · GHSA-56cv-c5p2-j2wg
References
More siyuan-note Siyuan vulnerabilities
- 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
- TI-2024-35827 A SQL injection vulnerability was discovered in Siyuan 3.1.11 in /getHistoryItems. CVSS 3.1CRITICAL 9.8
- TI-2024-35826 A SQL injection vulnerability has been identified in Siyuan 3.1.11 via the ids array parameter in /batchGetBlockAttrs. CVSS 3.1CRITICAL 9.8
- TI-2024-35825 A SQL injection vulnerability has been identified in Siyuan 3.1.11 via the id parameter at /getAssetContent. CVSS 3.1CRITICAL 9.8
- TI-2024-35824 A SQL injection vulnerability has been identified in Siyuan 3.1.11 via the notebook parameter in /searchHistory. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2026-32110 · CVE Program
- CVE-2026-32110 · NVD
- FIRST EPSS
- GHSA-56cv-c5p2-j2wg · 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