CVE-2026-72810

HIGH 8.6

SiYuan before v3.7.4 Publish-Boundary Bypass via WebSocket

CVSS Score

8.6

EPSS Score

0.0%

EPSS Percentile

0th

SiYuan versions before v3.7.4 contain a publish-boundary bypass vulnerability in WebSocket broadcast sessions that allows anonymous readers to receive unfiltered edits. Attackers can establish a WebSocket connection to the publish surface and passively receive real-time content events including password-protected and forbidden documents without authentication.

CWE	CWE-862
Vendor	siyuan-note
Product	siyuan
Published	Aug 14, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

siyuan-note / siyuan

0 < 3.7.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/siyuan-note/siyuan/security/advisories/GHSA-mw8r-mw84-88v2 vulncheck.com: https://www.vulncheck.com/advisories/siyuan-before-publish-boundary-bypass-via-websocket

Credits

🔍 Shirshakhtml