CVE-2026-73608

Received

Published: 13 Aug 2026, 11:28

Last modified:13 Aug 2026, 11:28

Vulnerability Summary

Overall Risk (default)

high

70/100

CVSS Score

9.2 CRITICAL

v4.0 (cve.org)

EPSS Score

No data

KEV

Not listed

Ransomware

No reports

Public exploits

None found

Dark Web

Not detected

Timeline

13 Aug 2026, 11:28

Published

Vulnerability first disclosed

Description

SiYuan's development branch (endpoint introduced by commit 9b8e8956f, not present in v3.7.3 or master, patched in v3.7.4) contains a missing-authorization vulnerability in the /api/av/getAttributeViewSearchTarget endpoint. The route is registered with CheckAuth only and performs no authorization checks (no CheckReadonly, no publish-access or encrypted-notebook gating). Given a database identifier taken from a published page and a keyword, an anonymous reader can query the endpoint to retrieve matching database row content, including rows that publish filters (FilterAttributeViewByPublishAccess) would otherwise withhold. No released stable version is affected.

CVSS Metrics

v4.0•CRITICAL•Score: 9.2CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
v4.0•CRITICAL•Score: 9.2CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
v3.1•HIGH•Score: 8.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Techniques & Countermeasures

CWE-862•Missing Authorization
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Affected Systems

siyuan-note•siyuan
< 3.7.4