Back to overview

CVE-2026-54069

CRITICAL
9.2
CVSS 4.0
Description
SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, SiYuan Note's kernel HTTP server unconditionally trusts all chrome-extension:// origins, granting RoleAdministrator access to every installed browser extension without any authentication. Combined with the default empty AccessAuthCode on desktop installs, any Chrome/Chromium extension -- including a compromised legitimate extension via supply chain attack -- can make fully authenticated admin API calls to the SiYuan kernel at 127.0.0.1:6806, enabling data exfiltration, stored XSS injection, and configuration tampering. This vulnerability is fixed in 3.7.0.

Metadata

CVE ID
CVE-2026-54069
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-11 18:24 UTC
Published
2026-06-24 21:17 UTC
Last updated
2026-06-24 21:17 UTC
Primary CWE
CWE-346
CWE-346: Origin Validation Error
Vendor / Product
siyuan-note / siyuan
Sources
cve.org  ·  NVD

Severity & Metrics

9.2 CRITICAL CVSS 4.0
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products (1)
VendorProductPlatformVersions
siyuan-note siyuan — < 3.7.0
Weakness (CWE)
CWESourceDescription
CWE-346 cna CWE-346: Origin Validation Error
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.2 CRITICAL 4.0 cna CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References (1)
Back to overview