CVE-2026-105205

MEDIUMCVSS 5.3

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.

Timeline

Published:October 4th, 2026 3:16 PM

Last modified:October 5th, 2026 2:17 PM

CVSS Scoring

CVSS v3: 5.3 (MEDIUM)

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

Weaknesses (CWE)

CWE-200

References & Reports

Advisories, patches, and third-party reports

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v758-8w88-pfr2
https://www.vulncheck.com/advisories/siyuan-before-3.8.5-information-disclosure-via-api-block-getdocinfo-and-getdocsinfo
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-v758-8w88-pfr2

Source: NIST NVD · Data may lag official sources by up to one minute