SiYuan <= v3.5.9 - Cross Site Scripting

SiYuan v3.5.10 contains a reflected XSS caused by improper sanitization of javascript: href attributes allowing ASCII control characters to bypass prefix checks in SVG sanitizer, letting unauthenticated attackers execute JavaScript via /api/icon/getDynamicIcon. id: CVE-2026-31809 info: name: SiYu...

SiYuan Note <= 3.6.5 - Authentication Bypass

SiYuan Note 3.6.5 and prior is vulnerable to authentication bypass. The CheckAuth middleware unconditionally trusted all chrome-extension:// origins, granting RoleAdministrator access without token validation to any request with a spoofed Origin header. Fixed in v3.7.0. id: CVE-2026-54069 info:...

SiYuan <= v3.6.1 - Path Traversal

SiYuan is a personal knowledge management system. Prior to version 3.6.2, the Siyuan kernel exposes an unauthenticated file-serving endpoint under /appearance/filepath. Due to improper path sanitization, attackers can perform directory traversal and read arbitrary files accessible to the server...

SiYuan - SQL Execution

SiYuan = v3.7.2 contains a SQL injection caused by passing client-supplied SQL statements verbatim to the main read-write database handle in /api/search/searchEmbedBlock, letting attackers with publish RoleReader token or anonymous access read and modify content, exploit requires publish RoleRead...

SiYuan <= v3.5.9 - SVG Animate Element XSS

SiYuan = v3.5.9 contains a reflected XSS caused by insufficient SVG sanitization allowing SVG animation elements to inject executable JavaScript in /api/icon/getDynamicIcon endpoint, letting unauthenticated attackers execute scripts. id: CVE-2026-31807 info: name: SiYuan = v3.5.9 - SVG Animate...

SiYuan <= v3.6.1 - Bookmark Data Disclosure

SiYuan v3.6.2 contains an information disclosure vulnerability caused by improper authorization checks in the publish service's bookmark filtering, letting unauthenticated visitors access bookmarked blocks from password-protected documents, exploit requires access to the publish service. id:...

SiYuan Note - Cross-Site Scripting

Unauthenticated reflected cross-site scripting XSS vulnerability in all versions of SiYuan Note containing /api/icon/getDynamicIcon with unsafe type=8 rendering logic. Attacker-controlled content is inserted directly into SVG output without proper sanitization. An attacker can execute arbitrary...

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:...

siyuan-mcp-admin-takeover-cve-2026-66012-missing-authorization

CVE-2026-66012 — SiYuan MCP Unauthenticated Administrator Takeover Proof of Concept for CVE-2026-66012 CVSS 10.0 Critical, a missing-authorization vulnerability in SiYuan's MCP Model Context Protocol endpoint that allows an unauthenticated attacker to achieve administrator takeover and remote cod...

CVE-2026-69084-PoC

CVE-2026-69084 / CVE-2026-69085 — SiYuan Arbitrary SQL Execution & SQLi CVE-2026-69084: Arbitrary SQL Execution via /api/search/searchEmbedBlock CVE-2026-69085: SQL Injection via /api/filetree/searchDocs CVSS 9.9 Critical each · CWE-89 · SiYuan = v3.7.2 fixed in v3.7.3 Published 2026-08-03 · no...

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-2026-82651

SiYuan before v3.8.1 does not apply the IsForbiddenAbsPath guard introduced in GHSA-c8r8-95hg-mp34 to the /history/path and /repo/diff/path endpoints in kernel/server/serve.go. These routes require admin authentication but construct file paths independently, so an authenticated administrator can...

CVE-2026-82650

SiYuan 3.8.0 contains a path traversal / sensitive file exposure vulnerability in the RenderTemplate function kernel/model/template.go, reachable via the POST /api/template/render endpoint kernel/api/template.go. The endpoint restricts the supplied path only to the workspace directory...

EUVD-2026-68240

SiYuan before v3.8.1 fails to properly escape block name, alias, and memo fields in hint, backlink, and breadcrumb rendering functions. Attackers can set a block's name to contain HTML/script tags that execute when another user views documents referencing or displaying that block...

CVE-2026-82654

SiYuan before v3.8.1 is affected by a Stored XSS caused by improper escaping of block name , alias , and memo fields in hint, backlink, and breadcrumb rendering functions. An attacker can set a block's name to contain HTML or script tags that execute when another user views a document referencing...

CVE-2026-82653

SiYuan before v3.8.1 is affected by a stored cross-site scripting (XSS) vulnerability in the confirmDialog() function. Unescaped package names and notebook names are interpolated directly into innerHTML assignments, allowing attackers to submit malicious bazaar packages with HTML/script payloads ...

EUVD-2026-68239

SiYuan before v3.8.1 contains a stored cross-site scripting vulnerability in confirmDialog where unescaped package names and notebook names are interpolated directly into innerHTML assignments. Attackers can submit malicious bazaar packages with HTML/script payloads in the name field that execute...

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 ...

EUVD-2026-68238

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-2026-82651 SiYuan before v3.8.1 Missing Authorization via /history and /repo/diff

SiYuan before v3.8.1 does not apply the IsForbiddenAbsPath guard introduced in GHSA-c8r8-95hg-mp34 to the /history/path and /repo/diff/path endpoints in kernel/server/serve.go. These routes require admin authentication but construct file paths independently, so an authenticated administrator can...