Langflow 1.2.x · Remote Code Execution (RCE)
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Rated by Threat Radar
Data as of 14 Aug 2025, 01:13 UTC
What to do
AI-suggested
Organizations should immediately identify and isolate any systems running Langflow 1.2.x. Since no official patches are listed, applying virtual patching via web application firewalls (WAFs) to block suspicious inputs targeting code execution vectors is recommended. Restrict network access to Langflow interfaces to trusted IPs and implement strict input validation and sanitization where possible. Monitoring logs for unusual activity or unexpected Python code execution attempts can help detect exploitation attempts early. If feasible, consider upgrading to a newer, patched version once available or replacing Langflow with alternative solutions. Additionally, conduct thorough security assessments and penetration testing focused on web application vulnerabilities to uncover similar issues.
Description
Langflow 1.2.x - Remote Code Execution (RCE)
Indicators of compromise
Exploit source code
#!/usr/bin/env python3
# Exploit Title: Langflow 1.2.x - Remote Code Execution (RCE)
# Date: 2025-07-11
# Exploit Author: Raghad Abdallah Al-syouf
# Vendor Homepage: https://github.com/logspace-ai/langflow
# Software Link: https://github.com/logspace-ai/langflow/releases
# Version: <= 1.2.x
# Tested on: Ubuntu / Docker
# CVE: CVE-2025-3248
# Description:
#Langflow exposes a vulnerable endpoint `/api/v1/validate/code` that improperly evaluates arbitrary Python code via the `exec()` function. An …