Incorrect Authorization in SiYuan Affects Document Privacy
CVE-2026-74906

8.7HIGH

Key Information:

Vendor

Siyuan-note

Status
Siyuan
Vendor
CVE Published:
18 August 2026

What is CVE-2026-74906?

An incorrect authorization vulnerability exists in SiYuan prior to version 3.7.4, impacting eight publish-mode reader-facing endpoints. This flaw enables unauthorized anonymous users to access and read documents explicitly marked as forbidden from being published. The affected endpoints include search, backlink, asset content, saved criteria, recent documents, graph, and tag functionalities, thereby compromising the intended privacy and security of sensitive content.

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-incorr...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
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

alham-rizvi
.