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CIRCL CVE Search vs Umeå Open Data

Same instrument, two spec sheets — measured, not claimed.

APICIRCL CVE SearchNEW—Umeå Open DataNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedVaries by dataset (municipal open data; see portal)
Free tierFree tier — API key requiredFree — open data portal, no key
Rate limitUnpublished1000 req/window · 999 remaining · resets 2026-07-09 00:00:00+00:00
In directory since2026-07-052026-07-05
operationalpartialdownno data

CIRCL CVE Search vs Umeå Open Data: common questions

Which is more reliable, CIRCL CVE Search or Umeå Open Data?

On our scheduled checks, Umeå Open Data leads on measured uptime — CIRCL CVE Search at —% versus Umeå Open Data at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do CIRCL CVE Search and Umeå Open Data need an API key?

Umeå Open Data needs no key, while CIRCL CVE Search requires a free API key. If you want to start calling without signup, reach for Umeå Open Data first.

Can I call CIRCL CVE Search and Umeå Open Data from the browser?

Yes — both CIRCL CVE Search and Umeå Open Data send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are CIRCL CVE Search and Umeå Open Data free for commercial use?

CIRCL CVE Search has unclear commercial terms, and Umeå Open Data has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.