SiYuan <= 3.6.5 - Unauthenticated Path Traversal

SiYuan = 3.6.5 contains a path traversal via double URL-encoding in the /assets/ route publish mode port 6808, allowing unauthenticated attackers to read arbitrary files inside WorkspaceDir including conf/conf.json which exposes the API token and access auth code. id: CVE-2026-54066 info: name:...

CVE-2026-87810

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-2026-87810 Siyuan before v3.8.2 Information Disclosure via fullTextSearchBlock

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-2026-87810

Siyuan before v3.8.2 contains an information disclosure vulnerability in the POST /api/search/fullTextSearchBlock endpoint. While the endpoint filters private blocks from returned results, it returns unfiltered match counts , allowing unauthenticated publish-mode readers to submit arbitrary searc...

GHSA-V684-Q882-JGMQ SiYuan: The publish-access gate treats encrypted notebooks as publicly accessible by default, allowing anonymous readers to retrieve fully decrypted document content while a notebook is unlocked

CVE: This vulnerability corresponds to CVE-2026-72789. Summary publishAccess.json is an opt-out list. The publish gate returns accessible for anything not explicitly listed in it. Encrypted notebooks are never written into that file, because only the administrator-gated setPublishAccess writes it...

EUVD-2026-57457

SiYuan: getEncryptedNotebookStatus discloses names and current lock/unlock state of all encrypted notebooks to anonymous readers...

GHSA-5FHR-F75J-8WR9 SiYuan: Missing publish-access filter on getAttributeViewKeysByID discloses database column schema, plus two unscoped block-ID enumeration oracles (publish mode)

CVE: This vulnerability corresponds to CVE-2026-72800. Summary POST /api/av/getAttributeViewKeysByID returns a database's full column schema with no publish-access filtering, while its sibling getAttributeViewKeys applies the filter for reader sessions. Two further endpoints,...

EUVD-2026-57461

SiYuan: Encrypted-notebook key-derivation material and wrapped notebook keys disclosed to anonymous readers, enabling offline master-password cracking...

GHSA-V7PH-R5R6-4JCJ SiYuan: Missing publish-access filter on getFileAnnotation discloses private PDF annotations of forbidden/protected documents (publish mode)

CVE: This vulnerability corresponds to CVE-2026-72808. Summary The /api/asset/getFileAnnotation endpoint returns the content of .sya PDF-annotation files with no publish-access check. It is gated by CheckAuth only, so it is reachable by the publish RoleReader token and by the anonymous account wh...

GHSA-WGWX-479J-23VQ SiYuan: Missing authorization on refreshBacklink allows anonymous readers to trigger persistent server-side writes and unauthenticated resource amplification (publish mode)

CVE: This vulnerability corresponds to CVE-2026-72812. Summary The /api/ref/refreshBacklink endpoint is gated by CheckAuth only. Unlike its mutating siblings, it carries no CheckAdminRole, no CheckReadonly, and no inline reader-role guard so it falls through all three authorization mechanisms the...

GHSA-7J72-F6WG-CXW6 SiYuan: Anonymous publish-password authentication bypass via getHeadingChildrenDOM / getHeading*Transaction / getBacklinkDoc (publish mode)

CVE: This vulnerability corresponds to CVE-2026-68584. Summary SiYuan's publish mode defines a "protected" access level: a document that is publicly listed but requires a password to read per the product's own UI help text, protected = "Publicly visible, requires password to access". The password...

GHSA-PM3W-VXP9-CCWC SiYuan: Cross-boundary metadata disclosure via getBlockInfo (publish mode): reader-reachable document title/root info for publish-forbidden docs; sibling getDocInfo is filtered

CVE: This vulnerability corresponds to CVE-2026-68585. Summary The /api/block/getBlockInfo endpoint returns document root metadata including the document title rootTitle for a block in a publish-forbidden document, with no publish-access check. Its sibling /api/block/getDocInfo applies the...

GHSA-36V8-MPJM-8J5R SiYuan: Cross-boundary content disclosure via getBacklinkDoc/getBackmentionDoc (publish mode): reader-reachable rendered DOM of publish-forbidden docs; sibling list endpoints are filtered

CVE: This vulnerability corresponds to CVE-2026-68586. Summary The backlink API splits into list endpoints which documents reference a block and content endpoints the rendered text of those referencing blocks. The list endpoints apply a publish-access filter, the content endpoints do not. As a...

GHSA-69MH-GVH4-8GP7 SiYuan: Full-content disclosure of publish-disabled documents via getHeading*Transaction endpoints (publish mode): reader-reachable rendered DOM with no publish-access check

CVE: This vulnerability corresponds to CVE-2026-68587. Summary Three "heading transaction" endpoints /api/block/getHeadingDeleteTransaction, /api/block/getHeadingLevelTransaction, and /api/block/getHeadingInsertTransaction return the rendered block DOM of a heading and its subtree in the computed...

GHSA-FPH3-GHQ9-VW66 SiYuan: Unauthenticated SQL execution and REGEXP injection via fullTextSearchAssetContent (publish mode): reader-reachable raw SQL (method 2) and unescaped REGEXP (method 3) on read-write asset-content DB

CVE: This vulnerability corresponds to CVE-2026-69083. Summary The /api/search/fullTextSearchAssetContent endpoint exposes two SQL flaws on the asset-content database, both reachable by the publish RoleReader token and by the anonymous account when Publish.Auth.Enable is false: 1. method 2 passes...

SiYuan: Unauthenticated arbitrary SQL execution via searchEmbedBlock (publish mode) : reader-reachable raw statement on read-write handle, cross-notebook read/write

CVE: This vulnerability corresponds to CVE-2026-69084. Summary The /api/search/searchEmbedBlock endpoint passes a client-supplied SQL statement verbatim to the database with no validation. The endpoint is gated by CheckAuth only reachable by the publish RoleReader token, and by the anonymous...

GHSA-VH22-H7HF-WWW7 SiYuan: Unauthenticated arbitrary SQL execution via searchEmbedBlock (publish mode) : reader-reachable raw statement on read-write handle, cross-notebook read/write

CVE: This vulnerability corresponds to CVE-2026-69084. Summary The /api/search/searchEmbedBlock endpoint passes a client-supplied SQL statement verbatim to the database with no validation. The endpoint is gated by CheckAuth only reachable by the publish RoleReader token, and by the anonymous...

CVE-2026-82652

SiYuan before v3.8.1 fails to filter invisible-tier content from SQL embed blocks, attribute-view keys, and attribute-view backlinks in publish mode. Anonymous readers can enumerate invisible content through these three listing mechanisms despite admin configuration marking content unlisted...

CVE-2026-82652

SiYuan before v3.8.1 is affected by an information disclosure vulnerability in publish mode . The application fails to filter invisible-tier content from three listing mechanisms: SQL embed blocks , attribute-view keys , and attribute-view backlinks . As a result, anonymous readers can enumerate ...

CVE-2026-82652 SiYuan before v3.8.1 Information Disclosure via Publish Access

SiYuan before v3.8.1 fails to filter invisible-tier content from SQL embed blocks, attribute-view keys, and attribute-view backlinks in publish mode. Anonymous readers can enumerate invisible content through these three listing mechanisms despite admin configuration marking content unlisted...