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-2026-100633

CVE-2026-100633 — SiYuan Published vulnerability report. The official CVE record credits dpfkdlemtp as Reporter. Official CVE record Published GitHub security advisory GHSA-9g6v-r3xf-673q CVE portfolio on my GitHub profile CVE assignment clarification GitHub staff declined to assign a second CVE ...

SiYuan: MCP file tool's blocklist is incomplete relative to the HTTP file API it claims to align with, exposing publish-mode passwords and other sensitive workspace files

Summary kernel/mcp/tools/file.go's resolvePath includes an explicit comment stating its sensitive-path blocklist is meant to align with the HTTP file API's established blacklist refuseToAccess in kernel/api/file.go, following the remediation for GHSA-cvhv-7xhj-xjp8 "Unauthenticated Administrator...

GHSA-C8R8-95HG-MP34 SiYuan: MCP file tool's blocklist is incomplete relative to the HTTP file API it claims to align with, exposing publish-mode passwords and other sensitive workspace files

Summary kernel/mcp/tools/file.go's resolvePath includes an explicit comment stating its sensitive-path blocklist is meant to align with the HTTP file API's established blacklist refuseToAccess in kernel/api/file.go, following the remediation for GHSA-cvhv-7xhj-xjp8 "Unauthenticated Administrator...

EUVD-2026-64268

SiYuan: MCP file tool's blocklist is incomplete relative to the HTTP file API it claims to align with, exposing publish-mode passwords and other sensitive workspace files...

CVE-2026-69083_exploit

CVE-2026-69083 — SiYuan Unauthenticated SQL Injection Unauthenticated SQL injection in SiYuan a Go-based knowledge-base app via the asset-content search endpoint. POST /api/search/fullTextSearchAssetContent builds a raw SQL statement by concatenating the user-controlled query value straight into ...

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 --check 2. DB-write proof: CREATE TABLE + INSERT...

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 - 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 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 <= 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 - 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 <= 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 <= 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 <=3.7.2 - SQL Injection

SiYuan before v3.7.3 contains a SQL injection caused by direct concatenation of the keyword parameter in /api/filetree/searchDocs endpoint, letting attackers with publish RoleReader token or unauthenticated in publish mode read and modify database content. id: CVE-2026-69085 info: name: SiYuan...

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:...

CVE-2026-116169

SiYuan from 2.10.0 before 3.8.7 contains a stored cross-site scripting vulnerability that allows users with edit permission to inject script by placing javascript: URLs in math block content rendered with KaTeX trust enabled. Attackers can store \href, \url, or \includegraphics payloads that...

CVE-2026-116171

SiYuan 3.5.4 before 3.8.7 on Windows contains a sensitive-path denylist bypass in IsSensitivePath because the Windows extended-length prefix \?\ survives filepath.Clean and matches no forbidden prefix. Authenticated API callers can prepend the prefix to localPath in /api/import/importStdMd to cop...

CVE-2026-116170

SiYuan before v3.8.7 contains an sql injection vulnerability that allows admin-token holders to read history.db by injecting unescaped op and type=3 query values. Attackers can send crafted UNION SELECT payloads to searchHistory or getHistoryItems endpoints to exfiltrate deleted document content,...

CVE-2026-116168

SiYuan before 3.8.7 contains a path traversal vulnerability in the MCP asset tool because validateAssetUploadPaths relies on an incomplete sensitive-path blacklist that omits .env and other secret files. Authenticated attackers driving the MCP asset upload action can copy such local files into th...