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Next.js vs FastAPI

Security & risk comparison · Updated June 2026

How does Next.js compare to FastAPI on security, AI-readiness, and total cost of ownership? We scored both across 7 dimensions using NVD/NIST CVE data, GitHub metrics, and our scan of 10M+ sites.

Key finding

FastAPI scores 82/100 overall versus Next.js's 81/100. FastAPI has 8 total CVEs compared to Next.js's 25, giving it a smaller vulnerability surface. (Source: WebPulse framework scoring, NVD/NIST, July 2026)

81
Next.js
Modern · JAVASCRIPT
vs
82
FastAPI
Modern · PYTHON
Dimension-by-dimension breakdown
security FastAPI
82
90
Next.js
FastAPI
performance Tie
65
65
Next.js
FastAPI
ecosystem Next.js
90
85
Next.js
FastAPI
ai readiness FastAPI
88
95
Next.js
FastAPI
developer experience FastAPI
85
88
Next.js
FastAPI
market trajectory Next.js
85
70
Next.js
FastAPI
cost of ownership Tie
75
75
Next.js
FastAPI
Security details
Metric Next.js FastAPI
Total CVEs 25 8
Critical CVEs 2 0
Exploited (KEV) 0 0
CVEs last year 8 2
Avg CVSS 4.5 3.5
Security score 82/100 90/100
Recommended
Next.js

Next.js scores 81/100. Verdict: Recommended.

Recommended
FastAPI

FastAPI scores 83/100. Verdict: Recommended.

Quick facts
Next.js
Category: Fullstack
Language: JAVASCRIPT
First release: 2016
Generation: Modern
Trend: Rising
Market share: 3.5%
FastAPI
Category: Backend
Language: PYTHON
First release: 2018
Generation: Modern
Trend: Rising
Market share: 0.6%
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Data sourced from NVD/NIST CVE database, GitHub API, and WebPulse framework scanner. Scores calculated using a 7-dimension model covering security, performance, ecosystem health, AI-readiness, developer experience, market trajectory, and cost of ownership. Updated June 2026.