CVE-2026-87810: Exposure of Sensitive Information to an Unauthorized Actor

Siyuan before v3.8.2 contains an information disclosure vulnerability in the POST /api/search/fullTextSearchBlock endpoint that filters private blocks from results but returns unfiltered match counts. Unauthenticated publish-mode readers can submit arbitrary search terms to learn whether matching...

CVE-2026-74904: Missing Authorization

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...

CVE-2026-73609: Missing Authorization

SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the getBookmarkLabels endpoint that returns all bookmark labels in the workspace without publish-access filtering. Anonymous readers and publish-mode readers can obtain the complete bookmark vocabulary across the...

CVE-2026-45148

SiYuan (open-source personal knowledge management) before v3.7.0 has broken access control in publish-mode, allowing Readers to enumerate metadata across documents via the searchAsset, searchTag, searchWidget, and searchTemplate endpoints. The issue arises when a publish-mode RoleReader accesses ...