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CIRCL CVE Search vs Photon API

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

APICIRCL CVE SearchHEALTHY89Photon APIHEALTHY91
Uptime · 30d
Uptime · 90d98.0%99.02%
Uptime · 30d96.7%98.3%
P50 · ms698710
P95 · ms27651598
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 Photon API: common questions

Which is more reliable, CIRCL CVE Search or Photon API?

On our scheduled checks, Photon API leads on measured uptime — CIRCL CVE Search at 98.0% versus Photon API at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, CIRCL CVE Search or Photon API?

CIRCL CVE Search has the lower median latency in our checks — CIRCL CVE Search responds in 698 ms versus Photon API at 710 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do CIRCL CVE Search and Photon API need an API key?

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

Can I call CIRCL CVE Search and Photon API from the browser?

Yes — both CIRCL CVE Search and Photon API 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 Photon API free for commercial use?

CIRCL CVE Search has unclear commercial terms, and Photon API 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.