Please help me solve the task


New member
Hello everybody

Please help me solve the task. Or at least tell me which way to look)
Those who know, I think they will solve the task in 1-2 minutes.
I need to find the flag (code word).
Given: (page)
And (I assume this is the same page, but in the form of code)
and also a hint: Try to 'cat flag.php' to solve this challenge =)

I think, that:
- the flag is written in the file "flag.php". You can read it using the "cat" command.
- the file is accessed through a vulnerability on the page:

Thank you in advance for your help)))