Reading JWT fields is not validation. Verify signatures together with expected issuer and audience.
Evaluation approach
Choose accepted algorithms from trusted server configuration. Check time claims and operation permissions separately.
Application example
Reject a correctly signed token issued for a different service.
Limits and considerations
A valid JWT does not authorize every requested object.
Why reject a valid signature?
The token may target another resource, come from an unexpected issuer or be expired. The server independently enforces intended-use conditions.
Checks and decisions
- Restrict algorithms
- Check issuer and audience
- Verify object access
Sources
The primary references above provide the technical basis. Example workflows and evaluation suggestions are this publication’s explanations, not independent test results for a particular product.