CVE-2026-73609

SiYuan before v3.7.4 Information Disclosure via getBookmarkLabels

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 workspace, disclosing subject matter and organizational information from inaccessible documents.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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Siyuan Siyuan

CVE-2026-73605

SiYuan before v3.7.4 Path Traversal via getUniqueFilename

SiYuan versions before v3.7.4 contain a path traversal vulnerability in the getUniqueFilename endpoint that allows anonymous readers to probe filesystem existence without validation or confinement. Attackers can supply arbitrary absolute paths to determine whether files and directories exist on the host, enabling reconnaissance of the filesystem layout and installed software.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72799

SiYuan before v3.7.4 Information Disclosure via Path Resolution

SiYuan before v3.7.4 (affected <=v3.7.2) fails to enforce publish-access filters on five filetree path-resolution endpoints (getFullHPathByID, getHPathByID, getPathByID, getIDsByHPath, and getHPathByPath). In publish mode, when Publish.Auth.Enable is false, an unauthenticated (anonymous) reader — or any publish reader token — can call these endpoints to enumerate the complete private document tree, mapping notebook names, folder hierarchies, and document titles, and resolving title paths to document IDs, including for documents marked hidden, password-protected, or publish-forbidden.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-73610

SiYuan before v3.7.4 Information Disclosure via Local Storage

SiYuan before v3.7.4 contains an information disclosure vulnerability in the local storage filter that returns the administrator's entire storage map with only three keys sanitized. Unauthenticated attackers or publish readers can retrieve closed-tab history, search keywords, private document identifiers, and expanded folder paths by calling the getLocalStorage endpoint.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-73606

SiYuan before v3.7.4 Information Disclosure via getRefIDs

SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the /api/block/getRefIDs endpoint that fails to check password-protected document tiers. Unauthenticated readers can discover that password-protected documents reference specific blocks and obtain block identifiers without entering the document password.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72808

SiYuan before v3.7.4 Information Disclosure via getFileAnnotation

SiYuan versions up to and including v3.7.2 (fixed in v3.7.4) contain an information disclosure vulnerability in the /api/asset/getFileAnnotation endpoint, which returns .sya PDF-annotation file content without a publish-access check. Because the endpoint is gated only by CheckAuth (unlike the /assets/* route, which enforces publish access and password), an anonymous reader (when publish authentication is disabled) or any publish RoleReader who knows an asset path can read the private PDF annotations (highlights and notes) of publish-forbidden, password-protected, or unpublished documents. The issue is limited to non-encrypted notebooks; encrypted-box annotations are not exposed.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72807

SiYuan before v3.7.4 SQL Injection via queryBlocks template

SiYuan versions before v3.7.4 contain a second-order SQL injection vulnerability in attribute-view template columns that expose the queryBlocks function, which executes raw SQL using string substitution instead of parameterized queries. Attackers can distribute malicious SiYuan documents or packages with crafted template columns that execute arbitrary SQL on a victim's kernel when the package is imported and rendered, enabling read and write access across notebooks.

CVSS 4.0 · 8.8 High EPSS < 1% KEV · Not listed

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B3log Siyuan

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CVE-2026-72806

SiYuan before v3.7.4 Authentication Bypass via Attribute View

SiYuan versions before v3.7.4 contain an authentication bypass vulnerability in the FilterViewByPublishAccess filter that fails to check publish password protection when rendering attribute views and database rows. Unauthenticated readers can access password-protected document rows including titles, block IDs, and column values by calling renderAttributeView without supplying the required password.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72804

SiYuan before v3.7.4 Authentication Bypass via Graph Endpoints

SiYuan versions before v3.7.4 fail to validate publish-password tier in getGraph and getLocalGraph endpoints, allowing anonymous readers to retrieve block-level content of password-protected documents. Attackers can call these endpoints without supplying a password to read protected document content and the complete reference topology.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72803

SiYuan before v3.7.4 Information Disclosure via getBlockAttrs

SiYuan versions before v3.7.4 fail to enforce publish-access checks in the getBlockAttrs and batchGetBlockAttrs endpoints. Attackers can retrieve block attributes including names, aliases, memos, and custom fields from protected documents by sending POST requests with block IDs.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72802

SiYuan before v3.7.4 Information Disclosure via resolveAssetPath

SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the resolveAssetPath endpoint that returns absolute filesystem paths unmodified to CheckAuth-only requests. Attackers can harvest relative asset paths from published documents and submit them to resolveAssetPath to obtain the server's absolute workspace path, disclosing the operating-system username and installation layout.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72800

SiYuan before v3.7.4 Information Disclosure via Unfiltered API

SiYuan versions before v3.7.4 fail to apply publish-access filtering to the getAttributeViewKeysByID endpoint, allowing authenticated readers to retrieve complete database column schemas including descriptions, select vocabularies, and template expressions. Additionally, getBlockDefIDsByRefText and getBlockRelevantIDs endpoints enumerate workspace-wide block IDs without publish scoping, enabling attackers to discover valid block identifiers across publish boundaries and access content from hidden or password-protected documents.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72796

SiYuan before v3.7.4 Access Control Bypass via Static Routes

SiYuan before v3.7.4 contains an access control bypass vulnerability where static-file routes in the server mux bypass publish-access controls enforced on the REST API. Attackers with publish reader tokens or anonymous access in disabled-auth mode can read templates, snippets, and export artifacts by directly accessing static routes that lack the same restrictions as their REST API counterparts.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72795

SiYuan before v3.7.4 Information Disclosure via Embed Block

SiYuan versions before v3.7.4 fail to filter embedded block content by publish access in the getBlockDOMWithEmbed and getBlockDOMsWithEmbed endpoints. Attackers can request published blocks containing embed queries to read content from password-protected, hidden, or forbidden documents without authorization.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72794

siyuan before v3.7.4 Session Cookie Key Disclosure via getConf

siyuan versions before v3.7.4 expose the session cookie signing key through the /api/system/getConf endpoint to unauthenticated users in publish mode. Attackers can retrieve the CookieKey value and forge valid session cookies to impersonate users or gain administrative access.

CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72792

SiYuan before v3.7.4 Information Disclosure via Tag API

SiYuan before v3.7.4 contains an information disclosure vulnerability in the /api/tag/getTag endpoint that returns tag labels and occurrence counts from password-protected documents to unauthenticated readers. Attackers can enumerate tag vocabulary and internal terminology from password-protected documents by calling the tag endpoint without providing the document's publish password.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72790

SiYuan before v3.7.4 Information Disclosure via getNotebookInfo

SiYuan before v3.7.4 contains an information disclosure vulnerability in the /api/notebook/getNotebookInfo endpoint that returns notebook metadata without authorization checks. Attackers can read notebook names, document counts, sizes, and timestamps for closed or non-published notebooks that should be hidden from readers.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-72788

SiYuan before v3.7.4 Information Disclosure via UILayout Filter

SiYuan versions before v3.7.4 contain an information disclosure vulnerability in the UILayout filter that fails to properly restrict administrator workspace state from publish readers. Unauthenticated attackers can retrieve the administrator's open documents, search terms, notebook paths, and private asset locations by calling the getConf endpoint without authentication.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-69086

SiYuan before v3.7.3 Path Traversal via unvalidated avID

SiYuan versions before v3.7.3 fail to validate the avID parameter on all code branches in attribute-view read endpoints, allowing attackers to construct traversal paths that escape the storage directory. Authenticated users with RoleReader permissions or anonymous clients when publish authentication is disabled can read JSON files outside the attribute-view directory to disclose cross-scope database content.

CVSS 4.0 · 8.3 High EPSS < 1% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan

CVE-2026-69085

SiYuan before v3.7.3 SQL Injection via searchDocs

SiYuan before v3.7.3 contains a SQL injection vulnerability in the /api/filetree/searchDocs endpoint, where the caller-supplied keyword parameter is concatenated directly into SQL statements with no escaping or parameter binding. The endpoint is reachable by a publish RoleReader token, or unauthenticated when publish mode is enabled with Publish.Auth.Enable set to false. Because the statement executes on a read-write SQLite handle via a driver that supports stacked (semicolon-separated) statements, an attacker can read and modify database content across all cleartext (non-encrypted) notebooks on the instance.

CVSS 4.0 · 9.9 Critical EPSS 1.4% KEV · Not listed

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B3log Siyuan

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Siyuan Siyuan