JWT (JSON Web Token) is an open standard (RFC 7519) that defines a way to provide information within a JSON object between two parties. JWT is widely used for sharing security information between two parties in web applications. Each JWT contains encoded JSON objects, including a set of claims. JWTs are signed using a cryptographic algorithm to ensure that the claims cannot be altered after the token is issued.

The most basic mistake is using hardcoded secrets for JWT generation/verification. This allows an attacker to forge the token if the source code (and JWT secret in it) is publicly exposed or leaked, which leads to authentication bypass or privilege escalation.

Auth0 implementation of JWT is the de facto library used in Java applications. This query detects insecure usage of hardcoded JWT secret keys in both signing and verification.

Please consider to merge the PR. Thanks.