← All labs
PractitionerPrivilege escalation

A hidden form value that grants admin

25 points · about 45 minutes · flag format DC{...}
Access ControlAuthentication

Brief

Privilege escalation is moving from the permissions you hold to ones you do not — a normal user reaching an admin function, one role assuming another's rights. It turns on a control that decides privilege from something the user can influence: a role field in a token, a hidden form value, an endpoint that never re-checks.

This lab: A hidden form value that grants admin. Climb from the access you were given to access you were not.

Work it against your own copy of the target. When you have the flag, submit it below.

Objective

Find where the application decides what you are allowed to do, and influence that decision to grant yourself more than your role should have. Capture the flag behind the elevated function.

Sign in and join the Academy to submit a flag, take hints and track your progress.

Sign in

Walkthrough

Locked until you solve it — or reveal it above, which forfeits the points. 3 hints available before then.