Vulnerability 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.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-4vpg-gwqq-w44c
- https://www.vulncheck.com/advisories/siyuan-before-missing-authorization-via-blo
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-4vpg-gwqq-w44c
FAQ
What is CVE-2026-74904?
CVE-2026-74904 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 g...
How severe is CVE-2026-74904?
CVE-2026-74904 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-74904?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.