Overview
VulDB is a vulnerability database API that lets you query detailed information about security vulnerabilities, CVEs, and threat intelligence data. You can retrieve vulnerability entries by ID, search across their database, and even set up automated bots for continuous monitoring. It is a great resource for security researchers and developers building threat-tracking tools.
Beginner Tip
Start with a simple GET request using your API key to fetch a specific CVE entry by its VulDB ID. Keep in mind that the free tier has strict rate limits, so cache responses locally to avoid hitting the quota quickly.
Measurement Record
What actually happened when we called this API from our own infrastructure. Every value below was recorded by the request, not copied from the provider's documentation.
- Request
- GET https://vuldb.com/?api
- Result
- HTTP 200 · application/json · 379 bytes · compressed
- Response time
- 436 ms (median of 3) · fastest 402 ms
- Transport
- TLSv1.3 · TLS_AES_256_GCM_SHA384 · certificate issued by Google Trust Services
- Browser CORS
- Allowed — Access-Control-Allow-Origin: *
- Served by
- cloudflare
- Recorded
- 2026-08-10
Fields Returned
Top-level fields present in the response we captured, with the type and value we actually received.
| Field | Type | Value received |
|---|---|---|
| version | string | 3.87 |
| format | string | json |
| status | string | 401 |
| lang | string | en |
| error | string | API key wrong format (missing) |
| querylimitmax | integer | 0 |
| timestamp | string | 1786391617 |
| rtt | integer | 0 |
| etag | string | 4a5d-0de5-dcca |
Captured Response
Captured from a real request to https://vuldb.com/?api on 2026-08-10. Long arrays and nested objects are truncated to keep the shape readable.
{
"response": {
"version": "3.87",
"format": "json",
"status": "401",
"lang": "en",
"error": "API key wrong format (missing)",
"querylimitmax": 0,
"timestamp": "1786391617",
"rtt": 0,
"etag": "4a5d-0de5-dcca"
},
"request": {
"timestamp": "1786391617",
"apikey": "missing"
}
} Implementation Example
Request skeleton. The URL below is this API's documentation page, not a live endpoint — swap in the path you need from the provider's docs before running it.
const url = "https://vuldb.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
headers: {
"X-API-Key": "YOUR_API_KEY"
}
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); What Can You Build?
Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.
How This API Fails
We deliberately sent this API a broken request and recorded exactly what came back on 2026-08-10. Knowing the shape of an error before you hit it makes error handling much easier to write.
Returned an HTML error page rather than JSON — worth knowing if your client assumes every response can be parsed as JSON.
Returned an HTML error page rather than JSON — worth knowing if your client assumes every response can be parsed as JSON.
Common Errors & Troubleshooting
Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.
Measured Score Breakdown
Live HTTP request to the API endpoint
Fully tested on Aug 10, 2026
Technical Specifications
Related Tags
Similar APIs
View All →BinaryEdge
BinaryEdge is a cybersecurity platform that continuously scans the entire internet and exposes the results through its API.
Botd
Botd is an open-source JavaScript library and API from FingerprintJS that detects whether a web visitor is a bot or a real human browser.
Bugcrowd
The Bugcrowd API gives you programmatic access to your organization's bug bounty program data, including submissions, rewards, and researcher profiles.
Censys
Censys is an internet-wide scanning platform that lets you search for any internet-connected host, device, or certificate using its REST API.
EmailRep
⭐ Beginner's PickEmailRep is a free API that evaluates the risk and reputation of an email address in seconds.