CVE-2026-73608

High

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.

SeverityHigh
CVSS8.6
Exploit probability—
ProductSiyuan
PublishedAug 13, 2026
First seenAug 13, 2026

How to fix

Update
  • siyuan-note siyuan3.7.4-alpha.3 or later

Affected products

ProductAffected versionsFixed in
siyuan-note siyuan3.7.4-alpha.2 ≤ v < 3.7.4-alpha.33.7.4-alpha.3

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