CVE-2026-54069
SiYuan: Unauthenticated Admin API Access via Blanket chrome-extension:// Origin Allowlist
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.
| CWE | CWE-346 |
| Vendor | siyuan-note |
| Product | siyuan |
| Published | Jun 24, 2026 |
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