ssti-jinja2

To achieve remote code execution via Jinja2 server-side template injection, you use context-free payloads and MRO chains to access underlying Python objects. This allows execution of arbitrary system commands on the target server during authorized penetration tests.

You can identify the vulnerable Python template engine by injecting specific test payloads that differentiate between Jinja2, Mako, Tornado, and Django. The application's response to these mathematical or string-based probes reveals the specific template engine processing the input.

To bypass input filters like underscore, dot, and bracket restrictions during template injection, you can utilize alternative attribute access methods and string concatenation techniques. These filter bypass strategies allow you to construct effective payloads without triggering blocked characters.

Yes, you can exploit blind SSTI when direct output is not visible by using error-based, boolean-based, time-based, and out-of-band (OOB) techniques. These methods infer template execution success through application response delays, error messages, or external network interactions.

To extract sensitive configuration data like the SECRET_KEY using Jinja2 SSTI, you inject payloads that access the application's configuration object and context variables. This allows you to read internal file contents and expose sensitive application settings directly from the template environment.