JSON web tokens (JWTs) are great — they are easy to work with and stateless, requiring less communication with a centralized authentication server. JWTs are handy when you need to securely pass information between services. As such, they’re often used as ID tokens or access tokens.
This is generally considered a secure practice as the tokens are usually signed and encrypted. However, when incorrectly configured or misused, JWTs can lead to broken object-level authorization or broken function-level authorization vulnerabilities. These vulnerabilities can expose a state where users can access other data or endpoints beyond their privileges. Therefore, it’s vital to follow best practices for using JWTs.
Knowing and understanding the fundamentals of JWTs is essential when determining a behavior strategy.
Curity is a leading IAM and API security technology provider that enables user authentication and authorization for digital services. The Curity Identity Server is highly scalable, handles the complexities of the leading identity standards, making them easier to use, customize and deploy.
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Michal Trojanowski