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CIRCL CVE Search vs Voidly

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

APICIRCL CVE SearchHEALTHY90VoidlyHEALTHY69
Uptime · 30d
Uptime · 90d96.1%86.1%
Uptime · 30d94.8%81.7%
P50 · ms5031865
P95 · ms28994655
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedCC BY 4.0
Free tierFree tier — API key requiredFree (keyless data endpoints; Hydra ML endpoints need a key)
Rate limitRetry-After: 5sUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CIRCL CVE Search vs Voidly: common questions

Which is more reliable, CIRCL CVE Search or Voidly?

On our scheduled checks, CIRCL CVE Search leads on measured uptime — CIRCL CVE Search at 96.1% versus Voidly at 86.1% 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 Voidly?

CIRCL CVE Search has the lower median latency in our checks — CIRCL CVE Search responds in 503 ms versus Voidly at 1865 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 Voidly need an API key?

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

Can I call CIRCL CVE Search and Voidly from the browser?

Only Voidly is browser-friendly — it returns CORS headers over HTTPS. CIRCL CVE Search needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are CIRCL CVE Search and Voidly free for commercial use?

CIRCL CVE Search has unclear commercial terms, and Voidly allows commercial use on its free tier. 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.