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CIRCL CVE Search

CIRCL CVE Search — free tier with API key

📚 Open DataHEALTHYchecked 7h ago
AUTH APIKEYCORS ✓AGENT ✓HTTPS ✓COMMERCIAL ?

CIRCL CVE Search exposes a free-tier JSON API. Register for an API key if required; we verified a public or demo endpoint.

90HOW IT'S SCORED ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: 90 · healthy
Uptime history
96.1%90 days
94.8%30 days
503P50 · ms
2899P95 · ms
operationalpartialdownno data
Response time · last 48 checks
Fastest 64 ms, slowest 2268 ms, most recent 155 ms.
Live response samplecaptured by our last successful check
GET https://vulnerability.circl.lu/api/browse/microsoft

[
  "windows server enterprise edition itanium",
  "windows server gold x64-datacenter"
]
Call itcurl · fetch · python
curl "https://vulnerability.circl.lu/api/browse/microsoft"
const res = await fetch("https://vulnerability.circl.lu/api/browse/microsoft");
const data = await res.json();
console.log(data);
import requests

res = requests.get("https://vulnerability.circl.lu/api/browse/microsoft")
print(res.json())
Endpoints · 5HealthyFULL DOCS ↗
Monitored path responding — GET /api/browse/microsoft503 mschecked 7h ago
GET/api/browse/microsoftPROBED

CIRCL CVE Search — free tier with API key

GET/api

Api — documented GET route.

GET/api/1

Api details by ID (example: 1).

GET/api?limit=10

Api — documented GET route.

GET/api/search?q=test

Search by query parameters.

Machine-readable spec

We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.

Response-shape history

Stable. No schema drift observed since monitoring began — the response shape has not changed under our checks.

CIRCL CVE Search: common questions

Is CIRCL CVE Search free to use?

Yes — CIRCL CVE Search is a free open data API. Free tier: Free tier — API key required. Whether the free tier allows commercial use is unclear — check the provider docs.

Does CIRCL CVE Search need an API key?

Yes — CIRCL CVE Search needs a free API key, which you pass on each request. Rate limits: Retry-After: 5s.

Can I call CIRCL CVE Search from the browser?

Yes — CIRCL CVE Search returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.

Is CIRCL CVE Search up right now?

As of our last scheduled check, CIRCL CVE Search is healthy with 96.1% uptime over 90 days and a 503 ms median response. We re-probe it every sweep — the status badge and uptime chart above always show the latest.