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FastAPI vs React

Security & risk comparison · Updated June 2026

How does FastAPI compare to React 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 React's 71/100. FastAPI has 8 total CVEs compared to React's 20, giving it a smaller vulnerability surface. (Source: WebPulse framework scoring, NVD/NIST, July 2026)

82
FastAPI
Modern · PYTHON
vs
71
React
Modern · JAVASCRIPT
Dimension-by-dimension breakdown
security FastAPI
90
80
FastAPI
React
performance Tie
65
65
FastAPI
React
ecosystem FastAPI
85
82
FastAPI
React
ai readiness FastAPI
95
55
FastAPI
React
developer experience FastAPI
88
70
FastAPI
React
market trajectory React
70
90
FastAPI
React
cost of ownership FastAPI
75
55
FastAPI
React
Security details
Metric FastAPI React
Total CVEs 8 20
Critical CVEs 0 2
Exploited (KEV) 0 0
CVEs last year 2 3
Avg CVSS 3.5 4.5
Security score 90/100 80/100
Recommended
FastAPI

FastAPI scores 83/100. Verdict: Recommended.

Acceptable
React

React scores 72/100. Verdict: Acceptable.

Quick facts
FastAPI
Category: Backend
Language: PYTHON
First release: 2018
Generation: Modern
Trend: Rising
Market share: 0.6%
React
Category: Frontend
Language: JAVASCRIPT
First release: 2013
Generation: Modern
Trend: Rising
Market share: 8.0%
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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.