CVE-2026-33669 | SiYuan is a personal knowledge management system. Prior to v… | CVSS 9.8 CRITICAL

Description

SiYuan is a personal knowledge management system. Prior to version 3.6.2, document IDs were retrieved via the /api/file/readDir interface, and then the /api/block/getChildBlocks interface was used to view the content of all documents. Version 3.6.2 patches the issue.

Metadata

CVE ID: CVE-2026-33669
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-03-23 16:34 UTC
Published: 2026-03-26 21:14 UTC
Last updated: 2026-03-27 20:26 UTC
Primary CWE: CWE-125
CWE-125: Out-of-bounds Read
Vendor / Product: siyuan-note / siyuan
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
siyuan-note	siyuan	—	< 3.6.2

Weakness (CWE)

CWE	Source	Description
CWE-125	cna	CWE-125: Out-of-bounds Read

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References (1)

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-34xj-66v3-6j83 https://github.com/siyuan-note/siyuan/security/advisories/GHSA-34xj-66v3-6j83