This project implements the following versions of the CVSS standard by FIRST:
- CVSS:2.0 - https://www.first.org/cvss/v2/guide
- CVSS:3.0 - https://www.first.org/cvss/v3.0/specification-document
- CVSS:3.1 - https://www.first.org/cvss/v3.1/specification-document
- CVSS:4.0 - https://www.first.org/cvss/v4.0/specification-document
Also:
- View the related {metæffekt} CVSS Calculator (official online version), that allows to calculate CVSS scores for multiple CVSS vectors of different versions simultaneously.
- See the build section for instructions on how to build the library.
The CVSS versions are implemented in the following classes:
They all inherit base functionality from the CvssVector.ts class.
const cvss4 = new Cvss4P0()
cvss4.applyVector('CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L')
cvss4.applyVector('SC:L/SI:L/SA:L')
console.log(cvss4.toString())CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L
const cvss4 = new Cvss4P0('CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L')
cvss4.applyComponentString('MAC', 'L')
cvss4.applyComponent(Cvss4P0Components.AC, Cvss4P0Components.AC_VALUES.H) // alternatively via types
const scores = cvss4.calculateScores()
console.log(scores){
"overall": 5.3,
"vector": "CVSS:4.0/AV:A/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/MAV:X/MAC:L/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X"
}const cvss3 = new Cvss3P1('CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L')
cvss3.applyComponentString("AC", "L")
console.log(cvss3.calculateScores(false))
console.log(cvss3.calculateScores(true)) // normalize all scores to a scale 0-10 (CVSS:3.1 Exploitability, Impact){
"base": 7.3,
"impact": 3.4,
"exploitability": 3.9,
"temporal": null,
"environmental": null,
"modifiedImpact": null,
"overall": 7.3,
"vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
}{
"base": 7.3,
"impact": 5.7,
"exploitability": 10,
"temporal": null,
"environmental": null,
"modifiedImpact": null,
"overall": 7.3,
"vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"
}git clone https://github.com/org-metaeffekt/metaeffekt-universal-cvss-calculator
cd metaeffekt-universal-cvss-calculator/ae-cvss-calculator
npm install
npm run buildThe minified ae-cvss-calculator.js can be found in the dist directory.
Otherwise, you can also build the packaged version by running
npm run pack