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CIRCL CVE Search vs University of Oslo

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

APICIRCL CVE SearchNEW—University of OsloNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CIRCL CVE Search vs University of Oslo: common questions

Which is more reliable, CIRCL CVE Search or University of Oslo?

On our scheduled checks, University of Oslo leads on measured uptime — CIRCL CVE Search at —% versus University of Oslo 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 University of Oslo need an API key?

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

Can I call CIRCL CVE Search and University of Oslo from the browser?

Yes — both CIRCL CVE Search and University of Oslo 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 University of Oslo free for commercial use?

CIRCL CVE Search has unclear commercial terms, and University of Oslo 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.