CVE-2026-85578

Medium

Description

SiYuan through 3.8.1 contains an authorization bypass vulnerability in the /api/file/getFile endpoint that allows readers to retrieve files from notebooks explicitly configured as Visible:false. Attackers with reader role can access private workspace files including notebook metadata and internal configuration by knowing the hidden notebook identifier and file path.

SeverityMedium

CVSS6.5

Exploit probability—

ProductSiyuan

PublishedSep 4, 2026

First seenSep 4, 2026

Weakness typeCWE-862Missing authorization

How to fix

Vendor advisories

github.com/siyuan-note/siyuan/security/advisories/GHSA-8ggq-wq3f-vxrw

Affected products

Product	Affected versions	Fixed in
siyuan-note siyuan	v ≤ 3.8.1	—

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