CVE-2026-85174— SiYuan before v3.8.2 API Token Exposure via Log File
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团队开源的一个以隐私为先的个人知识管理系统。 SiYuan 3.8.2之前版本存在日志信息泄露漏洞，该漏洞源于将查询参数中的API令牌以明文形式记录到可访问的日志文件中，可能导致经过身份验证的攻击者通过getFile端点读取日志文件，恢复管理员API令牌并获取永久管理权限。
Affected 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-2026-85174
Vulnerability Information
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Vulnerability Title
SiYuan before v3.8.2 API Token Exposure via Log File
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan before v3.8.2 logs API tokens from query parameters in plaintext to an accessible log file when full-text search requests exceed timing thresholds. Authenticated attackers can read the log file via the getFile endpoint to recover admin API tokens and gain permanent administrative access.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
通过日志文件的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
SiYuan 日志信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SiYuan是SiYuan团队开源的一个以隐私为先的个人知识管理系统。 SiYuan 3.8.2之前版本存在日志信息泄露漏洞，该漏洞源于将查询参数中的API令牌以明文形式记录到可访问的日志文件中，可能导致经过身份验证的攻击者通过getFile端点读取日志文件，恢复管理员API令牌并获取永久管理权限。
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 ~ 3.8.2 | - |
|
II. Public POCs for CVE-2026-85174
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-85174 (2)
-
-
🔗 SiYuan before v3.8.2 API Token Exposure via Log File | Advisories | VulnCheck third-party-advisory
IV. Related Vulnerabilities
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