Error received when using an API GET request, with JSON and Python

November 30, 2021

I’m getting an error trying to do an API get request, when using JSON RESTful services and Python3. Any help is appreciated. I’m supposed to use API instructions from this website https://nvd.nist.gov/developers/vulnerabilities#. I already have the CVE number, it’s listed in my URL below.

import requests
import json

response = requests.get('https://services.nvd.nist.gov/rest/json/CVE-2021-40463/1.0/').json()

print (response)

File "/Users/xxxx/Desktop/UT_Code/UT_Homework.py", line 4, in <module>
    response = requests.get('https://services.nvd.nist.gov/rest/json/CVE-2021-40463/1.0/').json()
  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/requests/models.py", line 910, in json
    return complexjson.loads(self.text, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/json/__init__.py", line 346, in loads
    return _default_decoder.decode(s)
  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/json/decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/json/decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

>Solution :

Your URL is wrong. Use

https://services.nvd.nist.gov/rest/json/cve/1.0/CVE-2021-40463/

full code:

import requests
import json

response = requests.get('https://services.nvd.nist.gov/rest/json/cve/1.0/CVE-2021-40463')
data = response.json()
print(json.dumps(data, indent=4))