Alternatives to 42Crunch for Feature flag rollout security check

When validating feature flag rollout surfaces, you need a scanner that does not require code or agents. This tool submits a URL and returns a risk score from A to F with prioritized findings. It performs read-only checks using GET and HEAD, and text-only POST for LLM probes, completing most scans in under a minute. Because it is black-box, it works across any language, framework, or cloud target without installing SDKs or agents.

The scanner evaluates 12 categories aligned to OWASP API Top 10 (2023), relevant for feature flag rollout security. It checks authentication bypasses and JWT misconfigurations such as alg=none or expired tokens. It probes for Broken Object Level Authorization (BOLA) via sequential ID enumeration and adjacent ID probing. It also tests for Broken Function Level Authorization (BFLA) through admin endpoint discovery and privilege escalation attempts. Additional coverage includes property over-exposure, input validation issues like CORS wildcard usage, rate limiting behavior, data exposure patterns such as PII and API keys, encryption hygiene, SSRF risks on URL-accepting parameters, and unsafe consumption surfaces like webhook callbacks. For AI-assisted development, it runs 18 adversarial probes across Quick, Standard, and Deep tiers to assess LLM security.

The tool parses OpenAPI 3.0, 3.1, and Swagger 2.0 files, resolving recursive $ref entries. It cross-references spec definitions against runtime behavior to highlight undefined security schemes, deprecated operations, and missing pagination. For feature flag systems that require authentication, the Starter tier and above support Bearer, API key, Basic auth, and Cookie credentials. Access is gated by domain verification using DNS TXT records or an HTTP well-known file to ensure only the domain owner can scan with credentials. The scanner forwards a restricted set of headers, including Authorization, X-API-Key, Cookie, and X-Custom-* headers.

For ongoing control validation, the Pro tier provides scheduled rescans every 6 hours, daily, weekly, or monthly. It detects diffs between scans, highlighting new findings, resolved issues, and score drift. Alerts are sent via email at a rate-limited cadence of one per hour per API, and HMAC-SHA256 signed webhooks notify external systems with auto-disable after 5 consecutive failures. Integration options include a web dashboard for tracking score trends and exporting branded compliance PDFs, a CLI via the middlebrick npm package, a GitHub Action for CI/CD gating that fails the build when scores drop below a threshold, and an MCP Server for use with AI coding assistants.

The tool does not fix, patch, block, or remediate findings; it reports with remediation guidance. It does not execute active SQL injection or command injection tests, which fall outside its read-only scope. It is not designed to discover business logic vulnerabilities that require domain context, nor does it perform blind SSRF testing that depends on out-of-band infrastructure. It should not replace a human pentester for high-stakes audits. The scanner focuses on detection and evidence rather than enforcement or automated correction.