What Is OWASP Juice Shop?

OWASP Juice Shop is an intentionally insecure application maintained as an OWASP project. It is commonly used for web application security training, API security education, secure coding workshops, capture-the-flag exercises, and demonstrations of security tools.

The application looks like a modern online shop, but behind the scenes it includes many realistic weaknesses that help people understand how vulnerabilities appear in real software. It is especially useful because the exercises touch authentication, authorization, input validation, client-side behavior, API endpoints, data exposure, session handling, and business logic abuse.

Simple way to think about it

Juice Shop is not a product you secure. It is a training environment you use to understand what insecure design and implementation can look like. That difference matters because the correct goal is learning, not production hardening.

Why Teams Use OWASP Juice Shop

Security teams like Juice Shop because it turns abstract vulnerability categories into something people can actually see. Instead of reading about broken access control or injection in theory, learners can observe how application behavior, API requests, and weak controls create risk.

Official OWASP Juice Shop Links

Use official sources when setting up Juice Shop. This reduces the risk of following outdated instructions, downloading modified copies, or using unofficial mirrors.

OWASP Juice Shop Website, Download, and GitHub

For a clean and trustworthy setup, start from the official OWASP Juice Shop project page, the official Juice Shop website, or the official GitHub repository. Avoid random repackaged downloads unless you fully trust the source and understand what was changed.

Download vs GitHub vs Docker

The word “download” can mean different things depending on what you want to do. If you want a fast training environment, Docker is usually the easiest path. If you want to inspect or customize the source code, use the official GitHub repository at https://github.com/juice-shop/juice-shop. If you are planning a formal workshop, use the official website at https://owasp-juice.shop/ and the OWASP project page at https://owasp.org/www-project-juice-shop/ to confirm the current recommended setup before the session.

Running OWASP Juice Shop with Docker

Docker is popular for Juice Shop because it keeps the lab contained and avoids installing the application stack directly on your machine. In many training environments, the workflow is simple: pull the image, run the container, and open the local web application in a browser.

Example local lab workflow

1. Install Docker Desktop from:
   https://www.docker.com/products/docker-desktop/

2. Pull the Juice Shop Docker image:
   docker pull bkimminich/juice-shop

3. Run Juice Shop locally on port 3000:
   docker run --rm -p 127.0.0.1:3000:3000 --name juice-shop bkimminich/juice-shop

4. Open the lab locally:
   http://localhost:3000

5. Stop the container when finished:
   Ctrl+C

Alternative detached mode:
   docker run -d -p 127.0.0.1:3000:3000 --name juice-shop bkimminich/juice-shop

Stop detached container:
   docker stop juice-shop

Remove detached container:
   docker rm juice-shop

That is enough for many security awareness sessions, but it is not the whole operational story. If multiple people are using the lab, decide whether each person gets a separate instance, whether the environment resets between sessions, and who can access the host. Shared instances can become messy because users may change data, create accounts, or solve challenges in a way that affects other participants.

Docker safety checklist

• Run Juice Shop only on a local machine, isolated VM, or controlled lab network.
• Do not publish the container directly to the internet.
• Do not reuse production credentials, production tokens, or real customer data in the lab.
• Reset or recreate the container between workshops when clean state matters.
• Restrict access if the lab is used by a group.
• Keep notes about which version was used so training material matches the environment.

OWASP Juice Shop Login: What to Know

The Juice Shop login page is part of the training experience. It is used in exercises around authentication, session handling, account behavior, and application security testing. In a normal training lab, participants can create their own account and use that account to explore the application safely.

Some Juice Shop challenges involve known demo accounts or intentionally weak authentication behavior. Those should be treated as training material, not as patterns to reuse in real applications. For a public article or customer-facing guide, it is better to explain the concept without turning the article into a step-by-step exploitation walkthrough.

Security Notes Before You Run It

Because Juice Shop is intentionally vulnerable, the deployment mindset should be different from a normal development environment. You are not trying to make the app secure. You are trying to keep the vulnerable app contained while people learn from it.

Do not expose it publicly

This is the most important rule. If the app is reachable from the internet, other people may find it, interact with it, and use it in ways you did not intend. Keep it local or behind strict lab access controls.

Do not connect it to sensitive systems

A training app does not need access to production databases, cloud secrets, internal admin panels, or customer data. Keep the lab environment separate and disposable.

Log what matters

Juice Shop can be a useful place to teach monitoring. Teams can observe request paths, login attempts, failed actions, abnormal request patterns, and API behavior. This is especially helpful when demonstrating why API security requires visibility beyond network ports and status codes.

What Juice Shop Teaches About API Security

Although Juice Shop is often described as a web application security training app, it is also useful for API security education. Modern applications are usually a browser, mobile app, or frontend calling APIs behind the scenes. Juice Shop makes that visible.

Teams can use it to discuss questions such as:

• Which endpoints exist, and which ones are actually used?
• What happens when a user changes request parameters?
• Are authorization checks enforced on the server side?
• What sensitive fields appear in responses?
• Can abnormal request sequences be detected from logs?
• Would a gateway, WAF, or API security platform see enough context to alert?

That makes Juice Shop helpful not only for developers, but also for security architects and CISOs who want teams to understand the difference between network visibility and application-layer visibility.

Common Mistakes to Avoid

• Using outdated instructions without checking the official project. Juice Shop evolves, so confirm current setup steps before a workshop.
• Running it on a public server. It is intentionally vulnerable and should stay inside a controlled lab.
• Using real credentials. Treat every account as disposable and lab-only.
• Sharing one instance with too many users. A shared lab can become inconsistent when participants change state.
• Skipping monitoring. The lab is more valuable when learners can see application behavior, not only the browser interface.
• Treating challenge solutions as production guidance. The point is to learn what not to do in real software.

Docker installation notes for Windows, macOS, and Linux

For Windows and macOS, the simplest official path is Docker Desktop from https://www.docker.com/products/docker-desktop/. Install it, open Docker Desktop, and verify Docker from PowerShell or Terminal.

Verify Docker:
docker --version

For Debian-based Linux distributions such as Ubuntu or Kali, Docker can be installed through the package manager in many lab environments. Teams that need the latest Docker packages should follow Docker’s official Linux installation documentation, but a simple lab setup commonly looks like this:

sudo apt update
sudo apt install -y docker.io docker-compose
sudo systemctl enable docker
sudo systemctl start docker
docker --version

Using Juice Shop to teach API monitoring

Juice Shop becomes more useful when learners can see what happens behind the browser. A trainer can pair the lab with proxy logs, browser developer tools, gateway logs, or API security monitoring to show how requests, responses, identities, and errors appear in real traffic.

Related OWASP, API security, and monitoring guides

This topic connects closely with REST API Endpoint Security Best Practices, API Security Solution for Enterprise DevSecOps, API Runtime Security Protection Platform, Real-Time API Threat Detection, Purpose of API Auto Discovery, and Enterprise API Monitoring Best Practices.

Conclusion

OWASP Juice Shop is a strong training resource because it makes application security tangible. The official website, GitHub repository, and Docker image give teams several ways to use it, from a quick local lab to a customized workshop environment.

The best approach is practical: use official sources, run it in an isolated lab, keep login activity lab-only, avoid public exposure, and pair the exercises with monitoring so learners understand what vulnerable behavior looks like in real traffic.

For teams working on API security, Juice Shop is especially useful because it shows how risk often lives inside normal-looking application flows. That is exactly why visibility, authorization, validation, logging, and runtime monitoring matter.

FAQs About OWASP Juice Shop