Information Disclosure Vulnerability in SiYuan by SiYuan Note
CVE-2026-72800

6.9MEDIUM

Key Information:

Vendor

Siyuan-note

Status
Siyuan
Vendor
CVE Published:
12 August 2026

What is CVE-2026-72800?

SiYuan versions prior to v3.7.4 contain a flaw that allows authenticated users to access sensitive database information through unfiltered API endpoints. This includes the ability to view complete database column schemas, descriptions, vocabularies, and template expressions via the getAttributeViewKeysByID endpoint. Furthermore, the endpoints getBlockDefIDsByRefText and getBlockRelevantIDs expose workspace-wide block identifiers, enabling attackers to bypass publish scopes and gain unauthorized access to hidden or password-protected documents. This vulnerability poses significant risks related to data privacy and security.

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
.