CVE-2026-73630

SiYuan before v3.7.4 contains an information disclosure vulnerability in the /api/filetree/authFilePublishAccess endpoint, which is registered with CheckAuth only and is reachable anonymously. The endpoint never sets a failure code, so its outcome is signalled entirely by the response message and by the presence of a Set-Cookie header, and these signals differ across access tiers. By submitting requests with an empty password for a candidate document identifier, an anonymous attacker can distinguish whether a document is public/nonexistent, password-protected, or exists at the hidden or forbidden tier, thereby confirming the existence of documents they are not permitted to access. Because hidden and forbidden entries store an empty password, such requests also cause the server to issue a publish-auth cookie for forbidden documents.

CVSS v3 5.8 MEDIUM

5.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-4pjg-x8qj-33j5
https://www.vulncheck.com/advisories/siyuan-before-information-disclosure-via-authfilepublishaccess

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-14 12:16

Updated : 2026-08-26 16:57

NVD link : CVE-2026-73630

Mitre link : CVE-2026-73630

CVE.ORG link : CVE-2026-73630

JSON object : View

Products Affected

No product.

CWE

CWE-203

Observable Discrepancy

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