{"uid":"cap_K4mKNsLg76V_EokULVV6o","slug":"sitecheck-web-intel-cors-misconfiguration-checker-72af34fd","name":"SiteCheck Web Intel CORS Misconfiguration Checker","description":"Checks how a site's home page answers a cross-origin request from a made-up origin: whether it echoes that origin back, sends a wildcard (*), and whether credentials are allowed with it. Echoing an arbitrary origin together with credentials is the risky case. One GET of the home page; it does not test API routes or the null origin.","url":"https://api.webintel-api.workers.dev/api/security/cors-misconfig?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","required":["domain"],"properties":{"domain":{"type":"string","description":"Domain name such as httpbin.org (required)"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_w725KggyVjbuPK6-bmQxv","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Checks a domain's home page for CORS misconfigurations by testing whether the server echoes arbitrary origins or sends wildcard responses with credentials allowed","exampleAgentPrompt":"Can you check if example.com has a dangerous CORS misconfiguration — specifically whether it echoes back arbitrary origins or allows credentials with a wildcard?","exampleUseCases":[{"title":"Pre-launch security audit","prompt":"Before we go live, can you check if our domain mycompany.com has any CORS misconfigurations that could let attackers make credentialed cross-origin requests on behalf of our users?"},{"title":"Third-party vendor risk check","prompt":"We're integrating with payments.vendordomain.com — can you check if their site has a risky CORS policy that echoes arbitrary origins with credentials allowed?"},{"title":"Bug bounty recon scan","prompt":"I'm doing a security assessment on targetsite.org — can you test their home page for CORS misconfigurations, especially whether they reflect the Origin header back and allow credentials?"}],"resultDescription":"Returns whether the domain's home page echoes a fabricated Origin header back in the Access-Control-Allow-Origin response header, whether a wildcard (*) is sent instead, and whether Access-Control-Allow-Credentials is set to true — flagging the most dangerous combination of echoed arbitrary origin plus credentials allowed.","failureModes":["Domain does not exist or DNS resolution fails — returns an error with no CORS data","Site is unreachable or times out — no header data returned","Only tests the home page (/) — API routes, subdomains, or null origin not covered","Some servers may not respond to cross-origin requests at all, returning no CORS headers","Rate limiting or blocking by the target server may produce incomplete results"],"whenToPreferThis":"Use this endpoint when you need a quick, low-cost check of a domain's top-level CORS policy for the risky origin-echoing-with-credentials pattern. It is a passive, single-GET probe ideal for reconnaissance, vendor assessments, or pre-deployment security audits. It does not replace a full CORS audit across all API routes but is well-suited for fast triage or bulk domain screening.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-25T12:31:27.527Z","isFirstParty":false,"canonicalSlug":"sitecheck-web-intel-cors-misconfiguration-checker-72af34fd"}