CVE-2026-72795: SiYuan: Embedded (transclusion) block content is returned without publish-access filtering, leaking private and password-protected document content to anonymous readers

Severity: Critical

CVSS Score: 8.6

SiYuan versions before v3.7.4 fail to filter embedded block content by publish access in the getBlockDOMWithEmbed and getBlockDOMsWithEmbed endpoints. Attackers can request published blocks containing embed queries to read content from password-protected, hidden, or forbidden documents without authorization.