Jwt

Source-map leak reveals JWT secret, forge admin token, then exploit Jinja2 SSTI for RCE.

A GraphQL vault chains a crackable HS256 JWT secret (the challenge name) for tier escalation with broken object-level authorization — the unreleased album is hidden from album(id) but leaks through the label→artists→albums path.

An alg:none JWT forgery grants admin, UNION-based SQLi reveals a hidden $99,999 vault dish, and a broken-authorization order flow lets the admin buy it for free — the flag arrives in a one-time Flask flash message.

A Kendrick-themed Flask app chains UNION-based SQLi to leak admin creds, an admin panel exposes an internal cipher microservice, and a Heartbleed-style over-read bleeds the AES-256 master key from heap memory to decrypt the flag.

Chaining a weak RNG seed (258 possible HMAC keys), an SSRF token leak, a urlparse vs urllib3 parser differential, and a URL-userinfo Basic-auth override to forge a VIP JWT and reach /vip-meal as localhost.