by Kastro
Paper/Archive/CVE-2026-68584

CVE-2026-68584

siyuan-note siyuan — SiYuan before v3.7.3 Authentication Bypass via Content Endpoints

EPSS 0.5%public exploitCVSS 9.2
critical.is priorityof 100
47
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 45.1.451 × 209.0Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

SiYuan versions before v3.7.3 contain an authentication bypass vulnerability in publish mode where content-returning endpoints getHeadingChildrenDOM, getHeading*Transaction, and getBacklinkDoc perform no password check despite protecting the primary getDoc endpoint. Anonymous attackers can retrieve full content of password-protected documents by obtaining internal block IDs from reader-accessible endpoints and calling unprotected content endpoints to bypass the password gate.

Affected

ProductAffectedFixed inSource
siyuan< 3.7.33.7.3CNA

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: poc · Automatable: yes · Technical impact: partial

References

advisorygithub.com/siyuan-note/siyuan/security/advisories/GHSA-7j72-f6wg-cxw6writeupvulncheck.com/advisories/siyuan-before-authentication-bypass-via-content-endpoints