HIGH 8.7 NVD
CVE-2026-74904
SiYuan before v3.7.4 is missing authorization checks in 17 block metadata/content endpoints in kernel/api/block.go (including getRefText, checkBlockExist, and g
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.
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-4vpg-gwqq-w44c
- https://www.vulncheck.com/advisories/siyuan-before-missing-authorization-via-block-api
This high severity vulnerability with a CVSS score of 8.7 was published on 2026-08-18 via NVD.
vulnfeed aggregates 11001 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.