Openapi

The kin-openapi library lacks cycle detection during runtime schema validation, allowing attackers to trigger an unrecoverable Go runtime stack overflow that terminates the entire host process.

The `swagger-typescript-api` tool is vulnerable to authorization token exfiltration. When a developer provides an `--authorizationToken` to fetch an OpenAPI specification, the tool attaches this token to all subsequent HTTP requests made while resolving external `$ref` URLs within the spec. Critically, it lacks same-origin checks, allowing a malicious OpenAPI spec containing a `$ref` to an attacker-controlled URL to cause the authorization token (e.g., GitHub PAT, OAuth bearer) to be sent verbatim to the attacker. This credential disclosure provides an attacker with the same scope of access as the stolen token, affecting development environments, CI/CD pipelines, and multi-tenant SaaS platforms.

The mcp-from-openapi library is vulnerable to Server-Side Request Forgery (SSRF) due to insecure handling of $ref pointers in OpenAPI specifications, allowing attackers to read local files, internal network resources, and cloud metadata endpoints by processing untrusted OpenAPI specifications.