by Kastro
Paper/Archive/CVE-2026-68587

CVE-2026-68587

siyuan-note siyuan — SiYuan before v3.7.3 Information Disclosure via getHeading*Transaction

EPSS 0.3%public exploitCVSS 9.2
critical.is priorityof 100
43
CVSS 9.2 (CNA)9.2 / 10 × 3027.6Not in CISA KEV+300.0EPSS percentile 25.2.252 × 205.0Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

SiYuan versions before v3.7.3 contain an information disclosure vulnerability in the getHeadingDeleteTransaction, getHeadingLevelTransaction, and getHeadingInsertTransaction endpoints that return rendered block DOM without publish-access checks. Anonymous readers or publish RoleReader tokens can supply a heading block ID to read full rendered content of publish-disabled documents that should be restricted.

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

exploitgithub.com/siyuan-note/siyuan/security/advisories/GHSA-69mh-gvh4-8gp7writeupvulncheck.com/advisories/siyuan-before-information-disclosure-via-getheading-transaction