JWTXploiter is a tool to test security of JSON Web Tokens. Test a JWT against all known CVEs;

  • Tamper with the token payload: changes claims and subclaims values.
  • Exploit known vulnerable header claims (kid, jku, x5u)
  • Verify a token
  • Retrieve the public key of your target’s ssl connection and try to use it in a key confusion attack with one option only
  • All JWAs supported
  • Generates a JWK and insert it in the token header
  • And much, much more!


  • Read the wiki! wiki


N.B. Cloning the repository should be avoided except for development purposes! N.B. Deb package has to be considered beta

  • With rpm:

wget http://andreatedeschi.uno/jwtxploiter/jwtxploiter-1.2.1-1.noarch.rpm
sudo rpm –install jwtxploiter-1.2.1-1.noarch.rpm

or, if previous version is installed on your machine

sudo rpm –upgrade jwtxploiter-1.2.1-1.noarch.rpm

With pip

sudo pip install jwtxploiter

With deb:

wget http://andreatedeschi.uno/jwtxploiter/jwtxploiter_1.2.1-1_all.deb
sudo dpkg -i jwtxploiter_1.2.1-1_all.deb

Cloing the repo:

git clone https://github.com/DontPanicO/jwtXploiter.git

N.B. python3-pip package is required to install dependencies, be sure to have it installed.