Is 42Crunch good for API version deprecation audit?

What middleBrick covers

Map findings to OWASP API Top 10 and audit evidence
Identify missing API versioning and legacy paths
Parse OpenAPI and Swagger with recursive reference resolution
Track deprecation changes via scheduled rescans and diffs
Deliver compliance reports and signed webhooks

Scope of API version deprecation auditing

An API version deprecation audit focuses on locating deprecated interface patterns, ensuring retirement policies are enforced, and validating that deprecated paths do not expose data or remain reachable. middleBrick maps findings to OWASP API Top 10 and supports audit evidence for controls related to interface inventory and change management. The scanner identifies versioning issues such as missing version segments in paths, use of legacy endpoints, and inconsistent deprecation headers.

Detection of deprecated interfaces and missing versioning

middleBrick scans for missing API versioning and legacy path patterns that indicate deprecated surfaces. It flags endpoints that lack version prefixes or query parameters, and surfaces server fingerprinting techniques that may reveal implementation details. These findings help teams identify where version deprecation policies are incomplete or inconsistently applied.

Missing versioning in resource paths
Legacy path patterns still responding to requests
Server fingerprinting that exposes runtime or framework details

Cross-specification validation for deprecation

The scanner parses OpenAPI 3.0, 3.1, and Swagger 2.0 documents with recursive $ref resolution, comparing the specification to runtime behavior. It highlights undefined security schemes, deprecated operations, and missing pagination that can complicate version retirement. This comparison helps verify that documented deprecation aligns with observed interface availability.

openapi: 3.0.3
info:
  title: Example API
  version: 2.1.0
paths:
  /v1/users:
    get:
      summary: Deprecated user list
      description: Use /v2/users instead
      responses:
        '200':
          description: OK

Limitations relevant to deprecation audits

middleBrick does not perform active SQL injection or command injection testing, as those require intrusive payloads outside its scope. It does not detect business logic vulnerabilities, which require domain-specific human review. Blind SSRF and out-of-band data exfiltration checks are also out of scope, meaning these deprecation risks cannot be fully validated by the scanner.

Continuous monitoring and reporting for deprecation

With Pro tier, scheduled rescans every six hours, daily, weekly, or monthly track changes over time, highlighting new findings, resolved findings, and score drift. Diff detection surfaces newly introduced deprecated endpoints or re-enabled interfaces, while email alerts notify teams of significant changes. HMAC-SHA256 signed webhooks can integrate deprecation signals into existing workflows, and compliance reports help document audit evidence.

Frequently Asked Questions

Does middleBrick replace a human audit for version deprecation?

No. The scanner detects interface patterns and surface inconsistencies, but it does not assess business logic or policy enforcement, which require human review.

Can it identify deprecated endpoints that still respond to requests?

Yes, it probes legacy path patterns and flags endpoints missing versioning or returning unexpected data, helping locate interfaces that should be retired.

Which frameworks and API specifications does it analyze?

It parses OpenAPI 3.0, 3.1, and Swagger 2.0 with recursive reference resolution, enabling cross-specification checks for deprecated routes and security schemes.

How are deprecation findings delivered and monitored over time?

Findings appear in the dashboard and can be exported; with Pro, scheduled rescans and diff detection highlight changes, while signed webhooks support automated tracking.