Vulnerability · Published Aug 12, 2026 · Assigned by VulnCheck

CVE-2026-72804SiYuan before v3.7.4 Authentication Bypass via Graph Endpoints

High 8.6

In plain English

A high-severity information exposure in siyuan from siyuan-note. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.6High

Exploit odds (30 days)0.4%top 62.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

SiYuan versions before v3.7.4 fail to validate publish-password tier in getGraph and getLocalGraph endpoints, allowing anonymous readers to retrieve block-level content of password-protected documents. Attackers can call these endpoints without supplying a password to read protected document content and the complete reference topology.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/siyuan-note/siyuan/kernel	0.0.0-20260724091654-82e9ded423e4	GHSA-vpjw-wf5h-cgpq
Go	github.com/siyuan-note/siyuan/kernel	0.0.0-20260724091654-82e9ded423e4	GO-2026-6407

Affected products (as reported)

Vendor	Product	Versions
siyuan-note	siyuan	0 – before 3.7.4

Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

References

GitHub Security Advisory (GHSA-vpjw-wf5h-cgpq) vendor-advisory
VulnCheck Advisory: SiYuan before v3.7.4 Authentication Bypass via Graph Endpoints third-party-advisory