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Verify JWT Decode #9

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@pixeebot pixeebot bot commented Jul 17, 2025

This codemod ensures calls to jwt.decode do not disable signature validation and other verifications. It checks that both the verify parameter (soon to be deprecated) and any verify key in the options dict parameter are not assigned to False.

Our change looks as follows:

  import jwt
  ...
- decoded_payload = jwt.decode(encoded_jwt, SECRET_KEY, algorithms=["HS256"], verify=False)
+ decoded_payload = jwt.decode(encoded_jwt, SECRET_KEY, algorithms=["HS256"], verify=True)
  ...
- decoded_payload = jwt.decode(encoded_jwt, SECRET_KEY, algorithms=["HS256"], options={"verify_signature": False, "verify_exp": False})
+ decoded_payload = jwt.decode(encoded_jwt, SECRET_KEY, algorithms=["HS256"], options={"verify_signature": True, "verify_exp": True})

Any verify parameter not listed relies on the secure True default value.

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Feedback | Community | Docs | Codemod ID: pixee:python/jwt-decode-verify

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