Information Disclosure in SiYuan Document Management Software
CVE-2026-73606

6.9MEDIUM

Key Information:

Vendor

Siyuan-note

Status
Siyuan
Vendor
CVE Published:
13 August 2026

What is CVE-2026-73606?

Versions of SiYuan prior to v3.7.4 expose an information disclosure vulnerability in the /api/block/getRefIDs endpoint. This flaw allows unauthorized users to access identifiers for blocks related to password-protected documents without the need for a password. As a result, sensitive information about the structure and references of protected documents can be retrieved by anyone, posing significant risks to user data privacy and integrity.

Affected Version(s)

siyuan 0 < 3.7.4

siyuan 3.7.4

References

https://github.com/siyuan-note/siyuan/security/advisories...
vendor-advisory
https://www.vulncheck.com/advisories/siyuan-before-inform...
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Shirshakhtml
.