Vulnerability Description
SiYuan is a personal knowledge management system. Prior to version 3.6.2, the publish service exposes bookmarked blocks from password-protected documents to unauthenticated visitors. In publish/read-only mode, /api/bookmark/getBookmark filters bookmark results by calling FilterBlocksByPublishAccess(nil, ...). Because the filter treats a nil context as authorized, it skips the publish password check and returns bookmarked blocks from documents configured as Protected. As a result, anyone who can access the publish service can retrieve content from protected documents without providing the required password, as long as at least one block in the document is bookmarked. This issue has been patched in version 3.6.2.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| B3Log | Siyuan | < 3.6.2 |
Related Weaknesses (CWE)
References
- https://github.com/siyuan-note/siyuan/issues/17246Issue Tracking
- https://github.com/siyuan-note/siyuan/releases/tag/v3.6.2Release Notes
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-c77m-r996-jr3qExploitVendor Advisory
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-c77m-r996-jr3qExploitVendor Advisory
FAQ
What is CVE-2026-34453?
CVE-2026-34453 is a vulnerability with a CVSS score of 7.5 (HIGH). SiYuan is a personal knowledge management system. Prior to version 3.6.2, the publish service exposes bookmarked blocks from password-protected documents to unauthenticated visitors. In publish/read-o...
How severe is CVE-2026-34453?
CVE-2026-34453 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-2026-34453?
Check the references section above for vendor advisories and patch information. Affected products include: B3Log Siyuan.