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CVE-2026-54068— SiYuan: Unauthenticated SQLite Data Exfiltration via Template Injection in /api/icon/getDynamicIcon

Quick assessment

Affected
siyuan-note siyuan
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SiYuan是SiYuan团队开源的一个个人知识管理系统。 SiYuan 3.7.0之前版本存在授权问题漏洞，该漏洞源于/api/icon/getDynamicIcon端点未进行身份验证，可能导致未经身份验证的网络相邻攻击者通过已知有效区块ID参数泄露所有用户笔记内容、标签、资产引用和区块属性。

CVSS 5.9 · Medium EPSS 0.38% · P30

Affected Version Matrix 1

VendorProduct Version RangeStatus
siyuan-note siyuan < 3.7.0 affected
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I. Basic Information for CVE-2026-54068

Vulnerability Information
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Vulnerability Title
SiYuan: Unauthenticated SQLite Data Exfiltration via Template Injection in /api/icon/getDynamicIcon
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, the /api/icon/getDynamicIcon endpoint is explicitly excluded from authentication in SiYuan's kernel router (router.go, "不需要鉴权" -- no auth needed). When called with type=8 and a valid block id parameter, this endpoint invokes RenderDynamicIconContentTemplate, which executes a Go template that includes the querySQL and queryBlocks functions. These functions run arbitrary SELECT statements against the SiYuan SQLite database. An unauthenticated network-adjacent attacker who knows a valid block ID can exfiltrate all user note content, tags, asset references, and block attributes from the database. This vulnerability is fixed in 3.7.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
SiYuan 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SiYuan是SiYuan团队开源的一个个人知识管理系统。 SiYuan 3.7.0之前版本存在授权问题漏洞，该漏洞源于/api/icon/getDynamicIcon端点未进行身份验证，可能导致未经身份验证的网络相邻攻击者通过已知有效区块ID参数泄露所有用户笔记内容、标签、资产引用和区块属性。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
siyuan-note siyuan < 3.7.0 -

II. Public POCs for CVE-2026-54068

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III. Intelligence Information for CVE-2026-54068

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Vendor Advisories for CVE-2026-54068 (1)

Same Patch Batch · siyuan-note · 2026-06-24 · 9 CVEs total

CVE-2026-54158 9.9 CRITICAL SiYuan: Stored XSS to RCE via attribute-view cell rendering in genAVValueHTML()
CVE-2026-54067 9.9 CRITICAL SiYuan: Stored XSS to RCE via CSS-snippet <style> breakout in renderSnippet()
CVE-2026-50551 9.9 CRITICAL SiYuan: Stored XSS to RCE via Unsanitized Attribute View Asset Cell Content
CVE-2026-55570 9.0 CRITICAL SiYuan: Stored XSS results to Electron RCE in SiYuan marketplace via unescaped `data-obj`
CVE-2026-54066 7.5 HIGH SiYuan: Path Traversal via Double URL Encoding in /assets/*path (publish mode arbitrary fi
CVE-2026-54070 7.1 HIGH SiYuan: Stored XSS in Bazaar marketplace via package README event handlers
CVE-2026-54759 SiYuan: Lute HTML sanitizer allows `<iframe>` tags in Bazaar package README, leading to ar
CVE-2026-54069 SiYuan: Unauthenticated Admin API Access via Blanket chrome-extension:// Origin Allowlist

IV. Related Vulnerabilities

Same product: siyuan
Same vendor: siyuan-note
Same weakness: CWE-306

V. Comments for CVE-2026-54068

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