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I have to agree with you. Without research, JWT is basically a foot-gun. I was aware of these issues from reading like-articles about JWT in the past. We work with a security engineer to try to ensure we're using JWTs appropriately.

One can argue that any generic tool can be used in an insecure fashion - common one is JSON.parse() in Javascript. By default, it's susceptible to prototype pollution. I can guarantee you that most devs will use that call on user input without appropriate sanitization.

Just like how the JWT spec hasn't been updated to disallow a lack of an algorithm, I'm unsure why JS doesn't offer a 'safe' version of the parse in the API.

We only use JWTs where it makes sense. For browser-based access, we personally prefer cookies with opaque ids to represent a session.




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