performing-jwt-none-algorithm-attack

What problem does it solve?

This Skill helps security testers identify and validate vulnerabilities related to JWT tokens by testing tokens with the "none" algorithm, exposing signature verification gaps.

Core Features & Use Cases

• Detect servers that accept unsigned JWTs by manipulating the alg header to none variants.
• Validate JWT handling across endpoints and assess potential privilege escalation or impersonation risks.
• Use in security assessments and penetration testing to verify proper token validation and least-privilege enforcement.

Quick Start

Run the agent against a target API endpoint to test for none-alg JWT vulnerabilities.