What happens if refresh token is stolen?

If the refresh token can be stolen, then so can the access token. With such an access token, the attacker can start making API calls. To make matters even more complicated, access tokens are often self-contained JWT tokens. Such tokens contain all the information needed for the API to make security decisions.

How do I refresh JWT tokens?

4 Answers

1. When you do log in, send 2 tokens (Access token, Refresh token) in response to the client.
2. The access token will have less expiry time and Refresh will have long expiry time.
3. The client (Front end) will store refresh token in his local storage and access token in cookies.

What is the refresh token?

Refresh Tokens are credentials used to obtain access tokens. Refresh tokens are issued to the client by the authorization server and are used to obtain a new access token when the current access token becomes invalid or expires, or to obtain additional access tokens with identical or narrower scope.

Can JWT token be forged?

One of the ways that attackers can forge their own tokens is by tampering with the alg field of the header. If the application does not restrict the algorithm type used in the JWT, an attacker can specify which algorithm to use, which could compromise the security of the token. JWT supports a “none” algorithm.

Should refresh token be JWT?

js of JWT with refresh token: In this case they use a uid and it’s not a JWT. When they refresh the token they send the refresh token and the user. If you implement it as a JWT, you don’t need to send the user, because it be would inside the JWT.

What is refresh token and access token in JWT?

Access token: It contains all the information the server needs to know if the user / device can access the resource you are requesting or not. They are usually expired tokens with a short validity period. Refresh token: The refresh token is used to generate a new access token.