Bug Hunting Journey

Writeups Auth bypass

Authentication bypass

3 writeups in this class.

Auth bypass · critical

The header the reverse proxy forgot to strip

The back office trusted an identity header that the edge only stripped on one of the two routes it exposed.

· 2 min read $2.5k - $5k
Auth bypass · critical

The kid header that accepted a path

The JWT library looked up the signing key by filename. The filename came from the token, and nobody checked it stayed in the keys directory.

· 1 min read $2.5k - $5k