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Vulnerabilities CVE-2026-73608

CVE-2026-73608

Critical
Open
TLP:CLEAR

SiYuan before v3.7.4 Authorization Bypass via getAttributeViewSearchTarget

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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.

Details

CVSS Score
9.2
CVSS Vector
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
Confidence
90%
Published
Aug 13, 2026
Last Modified
Aug 13, 2026
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