Invalidating an Access Token after User Logout (2024)

FAQs

Invalidating an Access Token after User Logout? ›

Solution. JWT Access Tokens cannot be revoked. They are valid until they expire. Since they are bearer tokens, there is no way to invalidate them.

To invalidate the JWT token upon logout, you can maintain a blacklist or a list of revoked tokens. When a user logs out, add their token to this blacklist. When a request is made with a blacklisted token, it should be rejected.

By definition, once generated, a jwt token is valid until expired. You can “logout” and remove the token from browser storage, but the token is still valid.

To revoke a refresh token, send a POST request to https://{yourDomain}/oauth/revoke . The /oauth/revoke endpoint revokes the entire grant, not just a specific token.

"Logging out" a JWT isn't really possible. You can only invalidate a JWT by letting it time out. Once a JWT is created with and expiration date is set and then signed, its signed.

JWT Access Tokens cannot be revoked. They are valid until they expire. Since they are bearer tokens, there is no way to invalidate them. If the token is used for accessing sensitive resources, Auth0 recommends using short-lived access tokens to mitigate the risk of someone copying and misusing a token.

The possible underlying root cause boils down usually to be one of these five possible reasons: invalid private key is used for the particular user. invalid login name is used for the particular user (if user's 'NAME' is different from 'LOGIN_NAME', then the latter must be used)

How do I revoke a user access token? ›

Note: You cannot revoke access tokens. Access tokens are short-lived and by default valid for 1 hour. However, when the refresh tokens are revoked, the application will not be able to redeem the refresh tokens (long-lived tokens) to acquire new access tokens.

At any time, an administrator can revoke the refresh token which means that the user must re-authenticate to get a new JWT. That is unless they happen to have a valid JWT. Here's where things get tricky. That user basically has 5 to 10 minutes to use the JWT before it expires.

The “Invalid Token” message indicates that a link has either been used previously, or has expired. To generate a new link, reset your password again through the main login screen. If you continue to have trouble, ensure you are referencing the most current Password Reset link.

Fixes. There are two ways to fix the error: (RECOMMENDED) Change the application signature algorithm to RS256 instead of HS256. Change the value of your responseType parameter to token id_token (instead of the default), so that you receive an access token in the response.

We can do this by creating a cron job that runs every day and deletes all records that have minimum_issued_at less than the current time minus JWT token TTL (Time To Live). This way, we can keep the blacklist table clean and small.

Currently, access tokens are valid until they expire regardless of the fact of the user may log out. In terms of security, invalidating access tokens right after the user logs out would reduce the window of opportunity for an attack.

Yes you should. Because after logout when the user will login a new access token with a new refresh token will be issued. In that case, you should not keep your refresh token. Because whether you delete or not, on next login refresh token will be issued again (if your grant allows).

Once issued, access tokens and ID tokens cannot be revoked in the same way as cookies with session IDs for server-side sessions. As a result, tokens should be issued for relatively short periods, and then refreshed periodically if the user remains active.

Revoke only the access token

Revoking only the access token effectively forces the client to use the refresh token in a request to retrieve a new access token. This could be useful if, for example, you've changed a user's data, and you want this information to be reflected in a new access token.