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Fix jwt_decode ignoring options #90
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The JWT_VERIFY_CLAIMS and JWT_REQUIRED_CLAIMS assume that item precense implies each item should be verified/required, and items that are excluded, should NOT be verified or required. Unfortunately, the PyJWT library will merge the supplied list of options against a list of defaults: https://github.com/jpadilla/pyjwt/blob/1.4.0/jwt/api_jwt.py#L74-L75 This means that if a user wanted to disable verification on expiration, a user can NOT change JWT_VERIFY_CLAIMS = ['signature', 'ext', 'nbf', 'iat'] to JWT_VERIFY_CLAIMS = ['signature', 'nbf', 'iat'] If a user DOESN'T want it to verify the expiration, then they need to explicitly set `verify_exp` to `False`. The current algorithm will look at the list, see that `verify_exp` was omitted, and pass in nothing for `verify_exp` , which then makes the PyJWT assume a default (which is `verify_exp=True`) To fix, the _default_jwt_decode_handler was updated to generate an options dictionary that sets each option to `True` or `False` so JWT_VERIFY_CLAIMS = ['signature', 'nbf', 'iat'] Now will properly set `verify_ext=False`.
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The PR is old but it works and its a required fix. Any plans of merging? |
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It seems to have made it into: #95 |
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The JWT_VERIFY_CLAIMS and JWT_REQUIRED_CLAIMS assume that item precense
implies each item should be verified/required, and items that are excluded,
should NOT be verified or required.
Unfortunately, the PyJWT library will merge the supplied list of options
against a list of defaults:
https://github.com/jpadilla/pyjwt/blob/1.4.0/jwt/api_jwt.py#L74-L75
This means that if a user wanted to disable verification on expiration,
a user can NOT change
JWT_VERIFY_CLAIMS = ['signature', 'ext', 'nbf', 'iat']
to
JWT_VERIFY_CLAIMS = ['signature', 'nbf', 'iat']
If a user DOESN'T want it to verify the expiration, then they need to
explicitly set
verify_exptoFalse. The current algorithm willlook at the list, see that
verify_expwas omitted, and pass in nothingfor
verify_exp, which then makes the PyJWT assume a default (which isverify_exp=True)To fix, the _default_jwt_decode_handler was updated to generate an
options dictionary that sets each option to
TrueorFalsesoJWT_VERIFY_CLAIMS = ['signature', 'nbf', 'iat']
Now will properly set
verify_ext=False.