CVE-2026-72810CWE-862broken-access-control

CVE-2026-72810

High · published August 14, 2026

CVSS v3.1
8.6
EPSS
1%
Percentile
44.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
9.2 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
EPSS
0.00538 · 44.5th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-08-14T16:16Z
References (3)
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-mw8r-mw84-88v2 · [email protected]https://www.vulncheck.com/advisories/siyuan-before-publish-boundary-bypass-via-websocket · [email protected]https://github.com/siyuan-note/siyuan/security/advisories/GHSA-mw8r-mw84-88v2 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 14 AUG 11:35Z
    SiYuan before v3.7.4 Publish-Boundary Bypass via WebSocket
    cvelistv5