EPSS History

GEThttps://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/{cve}

Returns the EPSS (exploit prediction) score history of a CVE.

Example

Request

curl

curl 'https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/CVE-2021-44228' \
  -H 'apikey: YOUR_API_KEY' \
  -H 'Accept: application/json'

Python

import requests

url = "https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/CVE-2021-44228"

headers = {
    "apikey": "YOUR_API_KEY",
    "Accept": "application/json"
}

response = requests.get(url, headers=headers)
response.raise_for_status()
print(response.json())

JavaScript

const url = "https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/CVE-2021-44228";

const response = await fetch(url, {
  method: "GET",
  headers: {
    "apikey": "YOUR_API_KEY",
    "Accept": "application/json"
  },
});

const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	req, err := http.NewRequest("GET", "https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/CVE-2021-44228", nil)
	if err != nil {
		panic(err)
	}
	req.Header.Set("apikey", "YOUR_API_KEY")
	req.Header.Set("Accept", "application/json")

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()

	body, err := io.ReadAll(res.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(body))
}

Java

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/CVE-2021-44228"))
            .header("apikey", "YOUR_API_KEY")
            .header("Accept", "application/json")
            .GET()
            .build();

        HttpResponse<String> response = HttpClient.newHttpClient()
            .send(request, HttpResponse.BodyHandlers.ofString());

        System.out.println(response.body());
    }
}

using System;
using System.Net.Http;

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Get, "https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/CVE-2021-44228");
request.Headers.Add("apikey", "YOUR_API_KEY");
request.Headers.Add("Accept", "application/json");

using var response = await client.SendAsync(request);
Console.WriteLine(await response.Content.ReadAsStringAsync());

PHP

<?php

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL => 'https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/CVE-2021-44228',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'apikey: YOUR_API_KEY',
        'Accept: application/json',
    ],
]);

$response = curl_exec($curl);

if ($response === false) {
    throw new RuntimeException(curl_error($curl));
}

echo $response . PHP_EOL;

Ruby

require 'net/http'
require 'uri'

uri = URI('https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/CVE-2021-44228')

request = Net::HTTP::Get.new(uri)
request['apikey'] = 'YOUR_API_KEY'
request['Accept'] = 'application/json'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: uri.scheme == 'https') do |http|
  http.request(request)
end

puts response.body

Response

200 OK · application/json

Response Body

{
  "cve": "CVE-2021-44228",
  "records": [
    {
      "epss": 0.99999,
      "percentile": 1.0,
      "date": "2026-09-21"
    },
    {
      "epss": 0.99999,
      "percentile": 1.0,
      "date": "2026-09-20"
    }
  ]
}

Content-Type: application/json
deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a

Request

curl

curl 'https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/not-a-real-value-zzz' \
  -H 'apikey: YOUR_API_KEY' \
  -H 'Accept: application/json'

Python

import requests

url = "https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/not-a-real-value-zzz"

headers = {
    "apikey": "YOUR_API_KEY",
    "Accept": "application/json"
}

response = requests.get(url, headers=headers)
response.raise_for_status()
print(response.json())

JavaScript

const url = "https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/not-a-real-value-zzz";

const response = await fetch(url, {
  method: "GET",
  headers: {
    "apikey": "YOUR_API_KEY",
    "Accept": "application/json"
  },
});

const data = await response.json();
console.log(data);

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	req, err := http.NewRequest("GET", "https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/not-a-real-value-zzz", nil)
	if err != nil {
		panic(err)
	}
	req.Header.Set("apikey", "YOUR_API_KEY")
	req.Header.Set("Accept", "application/json")

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()

	body, err := io.ReadAll(res.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(body))
}

Java

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/not-a-real-value-zzz"))
            .header("apikey", "YOUR_API_KEY")
            .header("Accept", "application/json")
            .GET()
            .build();

        HttpResponse<String> response = HttpClient.newHttpClient()
            .send(request, HttpResponse.BodyHandlers.ofString());

        System.out.println(response.body());
    }
}

using System;
using System.Net.Http;

using var client = new HttpClient();

var request = new HttpRequestMessage(HttpMethod.Get, "https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/not-a-real-value-zzz");
request.Headers.Add("apikey", "YOUR_API_KEY");
request.Headers.Add("Accept", "application/json");

using var response = await client.SendAsync(request);
Console.WriteLine(await response.Content.ReadAsStringAsync());

PHP

<?php

$curl = curl_init();

curl_setopt_array($curl, [
    CURLOPT_URL => 'https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/not-a-real-value-zzz',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_HTTPHEADER => [
        'apikey: YOUR_API_KEY',
        'Accept: application/json',
    ],
]);

$response = curl_exec($curl);

if ($response === false) {
    throw new RuntimeException(curl_error($curl));
}

echo $response . PHP_EOL;

Ruby

require 'net/http'
require 'uri'

uri = URI('https://api.deepinfo.com/v1/explore/vulnerability-insight/epss-history/not-a-real-value-zzz')

request = Net::HTTP::Get.new(uri)
request['apikey'] = 'YOUR_API_KEY'
request['Accept'] = 'application/json'

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: uri.scheme == 'https') do |http|
  http.request(request)
end

puts response.body

Response

400 Bad Request · application/json

Response Body

{
  "code": 10400,
  "parameters": [
    {
      "param": "cve",
      "details": [
        "The given input is not a valid cve."
      ]
    }
  ],
  "solution": "https://docs.deepinfo.com/reference/"
}

Content-Type: application/json
deepinfo-request-id: 5f0c6a8e-1b2d-4c3e-9f4a-7b8c9d0e1f2a

Authentication

Send your API key in the apikey request header.

Path Parameters

Parameter	Required	Description
`cve`	Required	Example`CVE-2021-44228`

Response Fields

Field	Type
`cve`	string
`records`	array of object

Response Schema

Inferred from examples Built from the saved 2xx example response: the fields it contains, with the types seen there. It is not a contract.

Field	Type	Example
`cve`	string	`"CVE-2021-44228"`
`records`	array<object>
`records[].epss`	number	`0.99999`
`records[].percentile`	number	`1`
`records[].date`	string	`"2026-09-21"`

Examples

Saved examples from the Deepinfo API. Selecting one loads it into the request and response panels.

Worked Examples

Worked examples of this endpoint, each on its own page with the exact request and the response it returns.

Log4Shell (CVE-2021-44228)The EPSS history of Log4Shell, 0.99999 with percentile 1.0 on every day shown, the top of the scale.
A CVE in the CISA KEV Catalog (CVE-2026-86218)The whole EPSS history of a 2026 CVE in the CISA KEV catalog, which rose in two steps from 0.00411 to 0.07494.

See all examples

Reference updated September 27, 2026