Vt
Spin up intentionally vulnerable environments from the terminal using Docker. Use when the user wants to practice security testing, set up CTF labs, exploit CVEs, or deploy vulnerable web apps like DVWA, Juice Shop, or WebGoat.
Install
$ agentstack add skill-happyhackingspace-skills-vt ✓ scanned · ✓ verified, works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
Verified badge
Passed review? Show it. Paste this badge into your README, it links to the public security report.
Links to your public security report.[](https://agentstack.voostack.com/security/report/skill-happyhackingspace-skills-vt) Reliability & compatibility
Declared compatibility
Compatibility is declared by the source manifest. End-to-end runtime verification is coming, see below.
We're building live execution health for every listing: tool-call success rate, median latency, uptime, and last-checked timestamps, measured, not self-reported. It isn't live yet, so we don't show numbers we can't stand behind.
How agent discovery & health will work →About
Vulnerable Target (vt)
vt is a Go CLI tool that creates intentionally vulnerable environments for security professionals, researchers, and educators using Docker Compose.
> CAUTION: vt creates intentionally vulnerable environments - always run in isolated networks (VMs/sandboxes) and never expose to the internet.
Installation
Prerequisites
- Go 1.24+
- Docker & Docker Compose
Install with Go
go install github.com/happyhackingspace/vt/cmd/vt@latestBuild from Source
git clone https://github.com/HappyHackingSpace/vt.git
cd vt
go build -o vt cmd/vt/main.go
mv vt /usr/local/bin/Command Reference
| Command | Description | |---------|-------------| | vt template --list | List all available templates | | vt template --list --filter | Filter templates by tag (sqli, xss, ssrf, etc.) | | vt template --update | Update templates from remote repository | | vt start --id | Start a vulnerable environment | | vt start --tags | Start all templates matching tags | | vt ps | List running environments | | vt stop --id | Stop an environment | | vt stop --tags | Stop all templates matching tags | | vt -v debug | Run with debug verbosity |
Available Templates
| Template | Type | Description | |----------|:----:|-------------| | vt-dvwa | Lab | Damn Vulnerable Web Application | | vt-juice-shop | Lab | OWASP Juice Shop | | vt-webgoat | Lab | OWASP WebGoat | | vt-bwapp | Lab | Buggy Web Application | | vt-mutillidae-ii | Lab | OWASP Mutillidae II |
More templates at vt-templates.
Examples
# List templates with SQL injection vulnerabilities
vt template --list --filter sqli
# Start DVWA
vt start --id vt-dvwa
# Start all XSS-related labs
vt start --tags xss
# Check running environments
vt ps
# Stop a specific environment
vt stop --id vt-dvwaUse Cases
| Use Case | Template | |----------|----------| | Practice SQL Injection | vt-dvwa | | Learn XSS Exploitation | vt-dvwa | | Test OWASP Top 10 | vt-juice-shop | | Exploit Real CVEs | vt-2025-29927 | | API Security Testing | vt-webgoat | | Train Security Teams | vt-mutillidae-ii |
References
- Repository: https://github.com/HappyHackingSpace/vt
- Templates: https://github.com/HappyHackingSpace/vt-templates
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: HappyHackingSpace
- Source: HappyHackingSpace/skills
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.