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CVE-2026-68584— SiYuan before v3.7.3 Authentication Bypass via Content Endpoints

Quick assessment

Affected
siyuan-note siyuan
Exploitation
Public or AI PoC available; prioritize validation
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团队开源的一款文档管理软件。 SiYuan 3.7.3之前版本存在授权问题漏洞，该漏洞源于发布模式下内容返回端点getHeadingChildrenDOM、getHeading*Transaction和getBacklinkDoc未执行密码检查，可能导致匿名攻击者获取内部块ID并调用未受保护端点绕过密码验证，获取受密码保护文档的完整内容。

CVSS 8.6 · High EPSS 0.31% · P23

Affected Version Matrix 2

VendorProduct Version RangeStatus
siyuan-note siyuan < 3.7.3 affected
3.7.3 unaffected
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I. Basic Information for CVE-2026-68584

Vulnerability Information
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Vulnerability Title
SiYuan before v3.7.3 Authentication Bypass via Content Endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan versions before v3.7.3 contain an authentication bypass vulnerability in publish mode where content-returning endpoints getHeadingChildrenDOM, getHeading*Transaction, and getBacklinkDoc perform no password check despite protecting the primary getDoc endpoint. Anonymous attackers can retrieve full content of password-protected documents by obtaining internal block IDs from reader-accessible endpoints and calling unprotected content endpoints to bypass the password gate.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用候选路径或通道进行的认证绕过
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团队开源的一款文档管理软件。 SiYuan 3.7.3之前版本存在授权问题漏洞，该漏洞源于发布模式下内容返回端点getHeadingChildrenDOM、getHeading*Transaction和getBacklinkDoc未执行密码检查，可能导致匿名攻击者获取内部块ID并调用未受保护端点绕过密码验证，获取受密码保护文档的完整内容。
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 0 ~ 3.7.3 -

II. Public POCs for CVE-2026-68584

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7663 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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III. Intelligence Information for CVE-2026-68584

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Vendor Advisories for CVE-2026-68584 (1)

Other References for CVE-2026-68584 (1)

Same Patch Batch · siyuan-note · 2026-08-03 · 8 CVEs total

CVE-2026-69083 10.0 CRITICAL SiYuan before v3.7.3 SQL Injection via fullTextSearchAssetContent
CVE-2026-69085 10.0 CRITICAL SiYuan before v3.7.3 SQL Injection via searchDocs
CVE-2026-69084 10.0 CRITICAL SiYuan before v3.7.3 SQL Injection via searchEmbedBlock
CVE-2026-68587 8.6 HIGH SiYuan before v3.7.3 Information Disclosure via getHeading*Transaction
CVE-2026-68586 8.6 HIGH SiYuan before v3.7.3 Content Disclosure via getBacklinkDoc
CVE-2026-69086 7.7 HIGH SiYuan before v3.7.3 Path Traversal via unvalidated avID
CVE-2026-68585 5.8 MEDIUM SiYuan before v3.7.3 Metadata Disclosure via getBlockInfo

IV. Related Vulnerabilities

Same product: siyuan
Same vendor: siyuan-note
Same weakness: CWE-288

V. Comments for CVE-2026-68584

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