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CVE-2026-126264— SiYuan before 3.8.9 Sensitive File Disclosure via /api/file/getFile

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 3.8.9 之前的版本存在一个信息泄露漏洞，允许经过身份验证的 Reader 用户通过绕过 getFile 函数中的敏感路径防护机制，获取以凭据命名的 widget 文件。攻击者可以请求类似 /data/widgets/<package>/credentials.json 的路径（针对发布时引用的 widgets），从而窃取 API 密钥、令牌或其他存储的秘密信息。

CVSS 7.7 · High EPSS 0.35% · P30

Affected Version Matrix 2

VendorProduct Version RangeStatus
siyuan-note siyuan < 3.8.9 affected
3.8.9 unaffected
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I. Basic Information for CVE-2026-126264

Vulnerability Information
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Vulnerability Title
SiYuan before 3.8.9 Sensitive File Disclosure via /api/file/getFile
Source: CVE Program / CVE List V5
Vulnerability Description
SiYuan before 3.8.9 contains an information disclosure vulnerability that allows authenticated Reader users to retrieve credential-named widget files by bypassing the sensitive-path guard in getFile. Attackers can request paths like /data/widgets/<package>/credentials.json for publish-referenced widgets to obtain API keys, tokens, or other stored secrets.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
siyuan-note siyuan 0 ~ 3.8.9 -

II. Public POCs for CVE-2026-126264

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III. Intelligence Information for CVE-2026-126264

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Patches & Fixes for CVE-2026-126264 (1)

Vendor Advisories for CVE-2026-126264 (2)

Same Patch Batch · siyuan-note · 2026-11-13 · 4 CVEs total

CVE-2026-126266 7.5 HIGH SiYuan from 3.6.0 before 3.8.9 Publish-Password Bypass via getDoc Regex Keywords
CVE-2026-126265 7.4 HIGH SiYuan 2.1.0 before 3.8.9 CAPTCHA Bypass via Stale Login Cookie
CVE-2026-126393 6.1 MEDIUM SiYuan before 3.8.10 SSRF via Skill-Install Download Redirect and DNS Rebinding

IV. Related Vulnerabilities

Same product: siyuan
Same vendor: siyuan-note
Same weakness: CWE-200