by Kastro
Paper/Archive/CVE-2026-72804

CVE-2026-72804

siyuan-note siyuan — SiYuan before v3.7.4 Authentication Bypass via Graph Endpoints

EPSS 0.4%CVSS 9.2
critical.is priorityof 100
35
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 37.5.375 × 207.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
siyuan< 3.7.43.7.4CNA

Scores by source

VulnCheck (CNA)9.2CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
VulnCheck (CNA)8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

advisorygithub.com/siyuan-note/siyuan/security/advisories/GHSA-vpjw-wf5h-cgpqwriteupvulncheck.com/advisories/siyuan-before-authentication-bypass-via-graph-endpoints