CVE-2026-73048

Medium

Description

SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the getRefIDsByFileAnnotationID endpoint that returns block identifiers citing PDF annotations without publish-access filtering. Attackers can extract block identifiers from restricted documents by supplying annotation identifiers visible in published pages, revealing citation relationships across forbidden and password-protected tiers.

SeverityMedium

CVSS5.8

Exploit probability—

ProductSiyuan

PublishedAug 14, 2026

First seenAug 14, 2026

Weakness typeCWE-862Missing authorization

How to fix

Update

siyuan-note siyuan3.7.4 or later

Vendor advisories

github.com/siyuan-note/siyuan/security/advisories/GHSA-f3q6-vc7q-m6h7

Affected products

Product	Affected versions	Fixed in
siyuan-note siyuan	v < 3.7.4	3.7.4

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