CVE-2026-34453
SiYuan: Unauthenticated Access to Password-Protected Bookmarks via /api/bookmark/getBookmark
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/siyuan-note/siyuan/kernel | <= 3.6.1 | 3.6.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| B3log | Siyuan | before 3.6.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-c77m-r996-jr3q
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-c77m-r996-jr3q
- https://nvd.nist.gov/vuln/detail/CVE-2026-34453
- https://github.com/siyuan-note/siyuan/issues/17246
- https://github.com/siyuan-note/siyuan/releases/tag/v3.6.2