GitHub Security Advisory (GHSA-vg99-7gj7-2fr5)Vendor advisory
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-vg99-7gj7-2fr5 CVE-2026-73606
MEDIUM
SiYuan before v3.7.4 Information Disclosure via getRefIDs
Record summary
CVE-2026-73606 has a selected CVSS score of 6.9 (medium).
Description
SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the /api/block/getRefIDs endpoint that fails to check password-protected document tiers. Unauthenticated readers can discover that password-protected documents reference specific blocks and obtain block identifiers without entering the document password.
Description source: CVE List
Exploitation context
CISA SSVC decision
ExploitationPoC
AutomatableYes
Technical impactPartial
CISA Coordinator · SSVC 2.0.3 · Evaluated Aug 13, 2026 · Source: CVE List
Affected products and versions
1| Product | Source | Version range | Status |
|---|---|---|---|
Default status: unaffected | CVE List | Before 3.7.4 | affected |
| 3.7.4 | unaffected |
References
3nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2026-73606 VulnCheck Advisory: SiYuan before v3.7.4 Information Disclosure via getRefIDsThird-party advisory
https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-getrefids