CVE-2026-103763

Medium

Description

SiYuan before v3.8.5 contains an information disclosure vulnerability that allows read-only publish readers to learn metadata of publish-excluded documents through the getNotebookInfo endpoint. Attackers, including anonymous visitors when no reader password is set, can query publish-visible notebooks to obtain document count, size and modification timestamps of hidden documents.

SeverityMedium

CVSS5.8

Exploit probability—

ProductSiyuan

PublishedOct 2, 2026

First seenOct 2, 2026

Weakness typeCWE-200Sensitive information exposure

How to fix

Update

siyuan-note siyuan3.8.5 or later

Vendor advisories

github.com/siyuan-note/siyuan/security/advisories/GHSA-ccxp-q3vg-jvgj

Affected products

Product	Affected versions	Fixed in
siyuan-note siyuan	v < 3.8.5	3.8.5

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.