CVE-2026-72804
published 2026-08-12CVE-2026-72804: SiYuan versions before v3.7.4 fail to validate publish-password tier in getGraph and getLocalGraph endpoints, allowing anonymous readers to retrieve…
PriorityP348high8.6CVSS 3.1
AVNACLPRNUINSCCHINAN
EPSS
0.26%
17.3th percentile
SiYuan versions before v3.7.4 fail to validate publish-password tier in getGraph and getLocalGraph endpoints, allowing anonymous readers to retrieve block-level content of password-protected documents. Attackers can call these endpoints without supplying a password to read protected document content and the complete reference topology.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | siyuan-note_siyuan_kernel | >= 0 < 0.0.0-20260724091654-82e9ded423e4 | 0.0.0-20260724091654-82e9ded423e4 |
| siyuan-note | siyuan | < 3.7.4 | 3.7.4 |
CVSS provenance
nvdv3.18.6HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
nvdv4.09.2CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
ghsa8.6HIGH
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GHSA
SiYuan: Graph endpoints omit the publish-password tier: anonymous readers receive block-level content of password-protected documents
ghsa·2026-09-03·CVSS 8.6
CVE-2026-72804 [HIGH] CWE-200 SiYuan: Graph endpoints omit the publish-password tier: anonymous readers receive block-level content of password-protected documents
SiYuan: Graph endpoints omit the publish-password tier: anonymous readers receive block-level content of password-protected documents
**CVE:** This vulnerability corresponds to [CVE-2026-72804](https://nvd.nist.gov/vuln/detail/CVE-2026-72804).
### Summary
`getGraph` and `getLocalGraph` filter reader sessions against the *visibility* tier only and never check the publish password. Password-protected documents are `Visible = true`, so their graph nodes survive the filter and graph nodes are block-level and carry the block's actual content. An anonymous reader who has never supplied a document's password can therefore retrieve that document's per-block content and its reference/backlink topology. Both endpoints are `CheckAuth`-only, so they are reachable by the publish `RoleReader` token a
GHSA
SiYuan versions before v3.7.4 fail to validate publish-password tier in getGraph and getLocalGraph endpoints, allowing anonymous readers to retrieve block-level content of password-protected documents
ghsa_unreviewed·2026-08-12
CVE-2026-72804 [CRITICAL] CWE-200 SiYuan versions before v3.7.4 fail to validate publish-password tier in getGraph and getLocalGraph endpoints, allowing anonymous readers to retrieve block-level content of password-protected documents
SiYuan versions before v3.7.4 fail to validate publish-password tier in getGraph and getLocalGraph endpoints, allowing anonymous readers to retrieve block-level content of password-protected documents. Attackers can call these endpoints without supplying a password to read protected document content and the complete reference topology.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-08-12
Published