> For the complete documentation index, see [llms.txt](https://hacking-notes.jord4n.pro/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hacking-notes.jord4n.pro/web/ssti.md).

# Server-Side Template Injection

Server-side template injection, sandbox escape, template engine detection, documented exploits, custom payloads, and RCE.

SSTI notes for PortSwigger Web Security Academy labs, focused on practical testing steps, Burp Suite validation, payload behavior, and exploitation workflow.

## Testing Workflow

1. Identify the vulnerable feature and the relevant request, parameter, header, cookie, or browser-side sink.
2. Reproduce the behavior in Burp Suite with a minimal payload before escalating the attack.
3. Validate impact with a clear proof of concept, such as account access, data disclosure, code execution, SSRF, or state change.
4. Keep payloads, URLs, tokens, and lab credentials unchanged while documenting the exploitation path.

## Labs

<table><thead><tr><th data-type="content-ref"></th></tr></thead><tbody><tr><td><a href="/web/ssti/basic-ruby-server-side-template-injection.md">Basic Ruby Server-Side Template Injection</a></td></tr><tr><td><a href="/web/ssti/basic-ssti-in-a-python-code-context.md">Basic SSTI in a Python Code Context</a></td></tr><tr><td><a href="/web/ssti/ssti-in-sandboxed-environment.md">SSTI in a Sandbox Environment</a></td></tr><tr><td><a href="/web/ssti/ssti-in-an-unknown-language-with-a-documented-node-js-exploit.md">SSTI in an Unknown Language with a Documented Node.js Exploit</a></td></tr><tr><td><a href="/web/ssti/ssti-information-disclosure-via-python-user-objects.md">SSTI Information Disclosure via Python User Objects</a></td></tr><tr><td><a href="/web/ssti/ssti-using-java-template-engine-documentation.md">SSTI Using Java Template Engine Documentation</a></td></tr><tr><td><a href="/web/ssti/ssti-with-custom-exploit.md">SSTI with a Custom Exploit</a></td></tr></tbody></table>


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