SiYuan before v3.7.4 Information Disclosure via getAttributeViewBacklinks
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Low · 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 v3.7.4 contain an information disclosure vulnerability in the getAttributeViewBacklinks endpoint that consults the forbidden access list instead of the visibility list when filtering backlinks. Anonymous readers can supply a publicly visible database row identifier to discover hidden-tier documents that reference it, receiving the database name, row title, and document path of hidden documents.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- 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 3.7.4 | 3.7.4 | Patch available | CNA |
| — | github.com/siyuan-note/siyuan/kernel (Go) | before 0.0.0-20260730150429-5b42614311b0 | 0.0.0-20260730150429-5b42614311b0 | Patch available | GHSA-p4qw-vx5p-g984 |
- siyuan Vendorsiyuan-note Affected before 3.7.4 Fixed in 3.7.4 Patch available CNA
- github.com/siyuan-note/siyuan/kernel (Go) Vendor— Affected before 0.0.0-20260730150429-5b42614311b0 Fixed in 0.0.0-20260730150429-5b42614311b0 Patch available GHSA-p4qw-vx5p-g984
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 3.7.4
- Fix · GHSA-p4qw-vx5p-g984 github.com/siyuan-note/siyuan/kernel (Go) Fixed in 0.0.0-20260730150429-5b42614311b0 Advisory →
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
siyuan-note siyuan 3.7.4
6 records Highest priority Priority HIGH 3 HIGH, 1 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2026-51036 SiYuan before v3.7.4 Publish-Boundary Bypass via WebSocketPriority HIGH 79
- TI-2026-51257 SiYuan before v3.7.4 Information Disclosure via getRefIDsByFileAnnotationIDPriority HIGH 70
- TI-2026-51037 SiYuan before v3.7.4 SQL Injection via backlink searchPriority MEDIUM 49
Timeline
- 2026-10-02 Threatist record created from CVE-2026-73049
- 2026-10-03 Alias added: GHSA-6xvp-3rfv-g2g2
- 2026-10-23 Alias added: GHSA-p4qw-vx5p-g984
- 2026-10-23 Fix available: Go/github.com/siyuan-note/siyuan/[email protected] · GHSA-p4qw-vx5p-g984
- 2026-10-23 CVSS score added · GHSA-p4qw-vx5p-g984
- 2026-10-23 Weakness changed · GHSA-p4qw-vx5p-g984
- 2026-10-23 5 new references · GHSA-p4qw-vx5p-g984
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-2026-73049 · CVE Program
- CVE-2026-73049 · NVD
- FIRST EPSS
- GHSA-6xvp-3rfv-g2g2 · GitHub Advisory Database · CC BY 4.0
- GHSA-p4qw-vx5p-g984 · 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