CVE-2026-105205

MediumCVSS 5.3/10Last modified Oct 5, 2026

Description

SiYuan before 3.8.5 contains an information disclosure vulnerability that allows publish-mode readers to learn backlink block IDs and reference counts from password-protected and publish-disabled documents by querying a published document. Attackers can send POST requests to /api/block/getDocInfo or getDocsInfo for a published document ID to obtain refIDs and refCount of hidden referencing blocks, bypassing the publish confidentiality boundary.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-200

Affected software

Vendor	Product	Versions
siyuan-note	siyuan	< 3.8.5

References

Timeline

Published: Oct 4, 2026
Last modified: Oct 5, 2026
NVD status: Deferred

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