CVE-2025-3248 PoC — Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/code

Source

https://github.com/ynsmroztas/CVE-2025-3248-Langflow-RCE

Associated Vulnerability

Title: Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/code (CVE-2025-3248)
Description:Langflow versions prior to 1.3.0 are susceptible to code injection in the /api/v1/validate/code endpoint. A remote and unauthenticated attacker can send crafted HTTP requests to execute arbitrary code.

Description

CVE-2025-3248 Langflow RCE Exploit

Readme

# mitsec - CVE-2025-3248 Langflow RCE Exploit

Remote Code Execution (RCE) exploit for **Langflow** applications vulnerable to **CVE-2025-3248**.

> Affected Endpoint: `/api/v1/validate/code`

## 🚀 Exploit Features

- Remote and unauthenticated RCE
- No authentication required
- Python3 one-liner script
- Colorized terminal output

## 🔧 Usage

```bash
python3 mitsec.py -u http://target:7860 -c "id"
```

## 🧪 Example Output

```bash
[+] Command Output:
uid=1001(langflow) gid=1001(langflow) groups=1001(langflow)
```

## 🧠 CVE Details

- **CVE**: CVE-2025-3248
- **Type**: Remote Code Execution (RCE)
- **Component**: Langflow backend
- **Condition**: Misuse of dynamic `exec()` in user-controlled code path

## 📌 ZoomEye Dork

```
app="Langflow"
```

## 🧑‍💻 Author

- Twitter: [@ynsmroztas](https://twitter.com/ynsmroztas)
- GitHub: [@ynsmroztas](https://github.com/ynsmroztas)

## 📜 Disclaimer

> This tool is for **educational and authorized security testing** purposes only. Unauthorized use is prohibited.

File Snapshot

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