CVE-2026-103762

Medium

Description

SiYuan before v3.8.5 contains a missing authorization vulnerability in the getRefCreateSavePath, getShorthandSavePath, and getDocCreateSavePath endpoints that allows read-only publish visitors to learn unpublished notebook box IDs. Attackers with read-only or anonymous publish access can POST any open notebook ID to receive the global save-box ID and save-path template, revealing a hidden notebook's existence and creation time.

SeverityMedium

CVSS5.3

Exploit probability—

ProductSiyuan

PublishedOct 2, 2026

First seenOct 2, 2026

Weakness typeCWE-862Missing authorization

How to fix

Update

siyuan-note siyuan3.8.5 or later

Vendor advisories

github.com/siyuan-note/siyuan/security/advisories/GHSA-2mrf-mx66-vv6g

Affected products

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

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