Why you should not use JWT?

Bottom line. Although JWT does eliminate the database lookup, it introduces security issues and other complexities while doing so. Security is binary—either it's secure or it's not. Thus making it dangerous to use JWT for user sessions.
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What is wrong with JWT?

Drawbacks. There are major drawbacks to using JWT. First, it's a complicated standard and users are prone to get the settings wrong. If the settings are wrong, in the worst case it could mean that anyone can generate valid JWTs and impersonate anyone else.
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What are the disadvantages of using JWT?

Compromised Secret Key

One of the major cons of relying on tokens is that it relies on just one key. Yes, JWT uses only one key, which if handled poorly by a developer/administrator, would lead to severe consequences that can compromise sensitive information.
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Is it safe to use JWT?

It's an encoded, URL-safe string that can contain an unlimited amount of data (unlike a cookie) and is cryptographically signed. When a server receives a JWT, it can guarantee the data it contains can be trusted because it's signed by the source. No middleman can modify a JWT once it's sent.
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Are JWT insecure?

If you receive a JWT with an unexpected algorithm, type header, etc, discard it, and stop right there. Remember that JWTs can come in as HMAC protected, signed, encrypted, or even completely unsecured ( alg = none ). That a JWT parses and has the correct format does not mean that it can be trusted.
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Why I haven't been using JWT tokens for Authentication



Does JWT put your web app at risk?

No they are not. Also the same applies to sessions, sessions should be refreshed, too. To clean up, your application may null out the session or remove the persisted value from the data store. The result is the same; no more session.
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Can JWT token be stolen?

What to Do if JWT Token is Stolen? There could be nothing worse than getting a JWT token stolen, as it's like providing a license to bypass all the layers of security to an attacker for exploiting sensitive information.
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Can JWT be hijacked?

Although the JWT token can be used in web applications there is a number of caveats that come with the choice of implementing JWT authentication tokens that can result in them being hijacked.
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Does Facebook use JWT?

It provides an entry point: “/auth/facebook” that redirects to FBs and proceeds to the authentication. After that it acquires the AccessToken for the logged user and creates a JWT Token that returns to the client.
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Does Instagram use JWT?

It seems that instagram doesn't use jwt (Json web token) in it's authentication system. As you know jwt is a more secure way for user authentication instead of session based systems. In jwt token is stored in the database and with each request, we send the token in our localStorage to serve to validate that.
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What are some pros and cons of JWT?

Pros and Cons of JWTs
  • JWTs expire at specific intervals. When a JWT is created it is given a specific expiration instant. ...
  • JWTs are signed. Since JWTs are cryptographically signed, they require a cryptographic algorithm to verify. ...
  • JWTs aren't easily revocable. ...
  • JWTs have exploits. ...
  • Sessions as an Alternative.
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What can I use instead of a JWT?

Top Alternatives to JSON Web Token
  1. OAuth2. ...
  2. Passport. ...
  3. Spring Security. ...
  4. Auth0. ...
  5. Amazon Cognito. ...
  6. Keycloak. ...
  7. Firebase Authentication. ...
  8. Devise.
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Is JWT better than session?

Since userId is got by decrypting the JWT token, no DB call is required to get userId, so somewhat faster that session approach. Servers can be scaled separately, without the need share sessionDB. This makes the JWT approach a great option for micro-services architecture.
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Does Google use sessions or JWT?

Google does not use JWTs for user sessions in the browser. They use regular cookie sessions. JWTs are used purely as Single Sign On transports so that your login session on one server or host can be transferred to a session on another server or host.
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Can JWT be broken?

Broken JSON Web Token (JWT) attacks are a type of API security vulnerability that fall under the broad OWASP Top 10 Broken Authentication category of security risks. They occur when JWT authentication mechanisms fail, enabling malicious actors to craft tokens and impersonate the user of a web application.
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Can JWT be spoofed?

Spoofing and reconstruction of signature is nearly impossible without the private key (assuming you are using asymmetric signing algorithm like RS256) that used for signing the original JWT. The JWK information available via OIDC discovery document only contains the public key.
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What companies use JWT?

216 developers on StackShare have stated that they use JSON Web Token.
  • webcontact.
  • defaults.
  • My Stack.
  • nick.karnik.
  • Petiquette.
  • ueni.
  • Personal.
  • RePeKa.
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Is JWT an OAuth?

Basically, JWT is a token format. OAuth is an standardised authorization protocol that can use JWT as a token. OAuth uses server-side and client-side storage. If you want to do real logout you must go with OAuth2.
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Is it safe to store JWT in cookie?

At the end of the day, keeping your JWT in a cookie can carry the same dangers as storing them in local storage. That means you really need to be sure that your app is free of XSS vulnerabilities in the first place.
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Can access token be stolen?

OAuth tokens are one of the go-to elements that IT vendors use to automate cloud services like code repositories and devops pipelines. While these tokens are useful for enabling key IT services, they're also vulnerable to theft.
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Should I encrypt JWT?

Signing and encryption order

JSON Web Tokens (JWT) can be signed then encrypted to provide confidentiality of the claims. While it's technically possible to perform the operations in any order to create a nested JWT, senders should first sign the JWT, then encrypt the resulting message.
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Is it safe to store JWT token in localStorage?

Cons: It's vulnerable to XSS attacks.

This means that the attacker can just take the access token that you stored in your localStorage . An XSS attack can happen from a third-party JavaScript code included in your website, like React, Vue, jQuery, Google Analytics, etc.
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Is JWT good for user authentication?

Although JWT does eliminate the database lookup, it introduces security issues and other complexities while doing so. Security is binary—either it's secure or it's not. Thus making it dangerous to use JWT for user sessions.
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Does discord use JWT?

But keep in mind that the Discord example you have shown is no JWT and JWT has some overhead because it has a header and it uses JSON. As jps says, that example from Discord is not a JWT. It's just a token which happens to look a bit similar to a JWT.
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