CVE-2026-34453

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.

• CWE-863

• 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-jr3qExploit, Vendor Advisory
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-c77m-r996-jr3qExploit, Vendor Advisory

Published

Mar 31, 2026

Last Modified

Jul 24, 2026

Status

Analyzed

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