Ensure JWT signatures are verified

Metadata

ID: python-security/insecure-jwt

Language: Python

Severity: Notice

Category: Security

CWE: 287

Use "verify_signature": False when decoding a JWT bypasses security and may authenticate users that should not be authenticated.

See Also

import jwt

def insecure_verify(token):
    decoded = jwt.decode(token, verify=False)
    print decoded
    return True

import jwt

jwt.decode(encoded, options={"verify_signature": False})

import jwt

jwt.decode(encoded, bla={"verify_signature": False})

jwt.decode(encoded, options={"foobar": False})

import jwt

jwt.decode(encoded, options={"verify_signature": True})

jwt.decode(encoded, options={"verify_signature": False})

1
2
rulesets:
  - python-security     # Rules to enforce Python security.

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