CVE-2026-86191— SiYuan before v3.8.2 Private Attribute View Key Enumeration
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.
思源笔记（SiYuan）在 v3.8.2 之前的版本中，其 接口存在信息泄露漏洞。该漏洞允许已发布的文档读者在未验证父级数据库可见性的情况下，枚举私有属性视图的键定义。攻击者可通过调用该接口获取完整的键模式信息，包括来自隐藏数据库的敏感字段名称和关系定义。
Possible ATT&CK Techniques 1 AI
T1213 · Data from Information RepositoriesAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| siyuan-note | siyuan | < 3.8.2 |
affected |
3.8.2 |
unaffected |
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I. Basic Information for CVE-2026-86191
Vulnerability Information
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Vulnerability Title
SiYuan before v3.8.2 Private Attribute View Key Enumeration
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan versions before v3.8.2 contain an information disclosure vulnerability in the getAttributeViewKeysByID endpoint that allows publish readers to enumerate private attribute view key definitions without verifying parent database visibility. Attackers can access the endpoint to retrieve complete key schemas including sensitive field names and relation definitions from hidden databases.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| siyuan-note | siyuan | 0 ~ 3.8.2 | - |
|
II. Public POCs for CVE-2026-86191
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-86191 (2)
IV. Related Vulnerabilities
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CVE-2026-86192
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CVE-2026-85585
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CVE-2026-85584
SiYuan before v3.8.2 Denial of Service via Auth Throttle -
CVE-2026-85582
SiYuan before v3.8.2 Unbounded Session Creation via Basic Au -
CVE-2026-85583
SiYuan before v3.8.2 Path Traversal via symlink in file API
Same vendor: siyuan-note
-
CVE-2026-86192
SiYuan before v3.8.2 Information Disclosure via Attribute-Vi -
CVE-2026-85585
SiYuan before v3.8.2 Unbounded Memory Consumption via Contro -
CVE-2026-85584
SiYuan before v3.8.2 Denial of Service via Auth Throttle -
CVE-2026-85582
SiYuan before v3.8.2 Unbounded Session Creation via Basic Au -
CVE-2026-85583
SiYuan before v3.8.2 Path Traversal via symlink in file API
Same weakness: CWE-639
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CVE-2026-86192
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Plane through 1.4.2 Arbitrary Comment Write via Public Deplo -
CVE-2026-86113
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V. Comments for CVE-2026-86191
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