VULNERABILITY INTELLIGENCE
CVE-2026-74904
CVSS score7.5 HIGH
EPSS probability0.45%
CISA KEVNot currently listed
Published2026-08-18
Last modified2026-10-22
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Description
SiYuan before v3.7.4 is missing authorization checks in 17 block metadata/content endpoints in kernel/api/block.go (including getRefText, checkBlockExist, and getBlockBreadcrumb). These handlers are gated only by basic authentication (model.CheckAuth) and lack publish-access filtering, allowing anonymous publish-mode readers to disclose private block content-derived text, structural metadata, and existence information for arbitrary block IDs across the workspace.
Weakness classification
- disclosure@vulncheck.com: CWE-862