CVE-2026-73054

SiYuan versions before v3.7.4 contain an authentication bypass vulnerability in the WebSocket endpoint caused by differential parsing of query parameters between authentication exemption and session quarantine checks. Unauthenticated attackers can craft a malicious WebSocket URI with duplicated query parameters to bypass access auth code validation and receive the live kernel event stream including document identifiers, titles, and operation logs.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-c8w8-3pqp-wr83
https://www.vulncheck.com/advisories/siyuan-before-authentication-bypass-via-websocket
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-c8w8-3pqp-wr83

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-15 22:16

Updated : 2026-08-26 17:05

NVD link : CVE-2026-73054

Mitre link : CVE-2026-73054

CVE.ORG link : CVE-2026-73054

JSON object : View

Products Affected

No product.

CWE

CWE-287

Improper Authentication

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