Why Are HACKERS Good At Programming?
I found RCE in a Flask app using a simple Jinja2 template injection.
In this video, I show how:
_class__.__base_ and __subclasses__() expose Python internals
{{ x }} works even when x isn’t defined
Jinja2 silently uses Undefined, letting us index into dangerous classes
We chain it all into full remote code execution using __import__('os')
If you're into real-world SSTI exploitation, this is for you.
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