judge0/judge0

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Robust, fast, scalable, and sandboxed open-source online code execution system for humans and AI.

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HTML·GNU General Public License v3.0·Last commit Mar 31, 2026·by @judge0·Published April 2, 2026·Analyzed 5d ago

Safety Rating A

No hardcoded secrets, malicious code patterns, suspicious dependencies, or prompt injection attempts were detected. The repository is a well-established, widely-cited open-source project with a clear legitimate purpose, active community, and academic research backing. Known CVEs (CVE-2024-28185, CVE-2024-28189) related to sandbox escape are publicly disclosed and referenced in external blog posts, indicating transparent security practices. No red flags found in the repository content itself.

ℹAI-assisted review, not a professional security audit.

AI Analysis

Judge0 is a robust, fast, scalable, and sandboxed open-source online code execution system. It provides secure sandboxed compilation and execution of untrusted code across 90+ programming languages via a simple HTTP JSON API. It can be self-hosted or used as a managed SaaS, and supports use cases ranging from competitive programming platforms and e-learning systems to AI agent code execution tools. Built on Docker and Isolate for sandboxing, it also offers an official Python SDK, webhooks, multi-file program support, and customizable compiler options.

Use Cases

Providing sandboxed code execution for AI agents and LLM-powered coding assistants
Building competitive programming and online judge platforms (LeetCode-style)
Powering e-learning and candidate assessment platforms with live code execution
Enabling online IDEs and code editors with multi-language compilation support
Executing AI-generated code in automated pipelines and evaluation workflows