Is it safe to send JWT in URL?
Because JWTs are just URL safe strings, they’re easy to pass around via URL parameters, etc. They contain JSON-encoded data. This means you can have your JWT store as much JSON data as you want, and you can decode your token string into a JSON object. This makes them convenient for embedding information.
Are JWT secure?
The contents in a json web token (JWT) are not inherently secure, but there is a built-in feature for verifying token authenticity. A JWT is three hashes separated by periods.
Is it safe to put a JWT into the URL?
There will be no data-loss when used in-place; no additional encoding is required; it is even URL encoding safe inherently, applying url-encoding (percentage-encoding) on the JWT multiple times will not destroy it. There can be a data-leak when used in-place if the URL itself is part of such a data-leak.
Where are JWT tokens stored in a browser?
For browser-based applications, this means never storing your tokens in HTML5 Local Storage and instead storing tokens in server-side cookies that are not accessible to JavaScript. In general, token-based authentication does not provide any additional security over typical session-based authentication relying on opaque session identifiers.
What happens if your JWT is stolen or compromised?
In short: it’s bad, real bad. Because JWTs are used to identify the client, if one is stolen or compromised, an attacker has full access to the user’s account in the same way they would if the attacker had instead compromised the user’s username and password.
Which is the most important part of JWT security?
The most crucial security claim is the “exp” claim. The issuer uses this claim to indicate the expiration date of a JWT. If this expiration date lies in the past, the JWT has expired and must not be used anymore. A typical example use case is an OpenID Connect identity token, which expires after a set period.