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FastAPI vs Spring Boot

Security & risk comparison · Updated June 2026

How does FastAPI compare to Spring Boot 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 Spring Boot's 65/100. FastAPI has 8 total CVEs compared to Spring Boot's 250, giving it a smaller vulnerability surface. (Source: WebPulse framework scoring, NVD/NIST, July 2026)

82
FastAPI
Modern · PYTHON
vs
65
Spring Boot
Modern · JAVA
Dimension-by-dimension breakdown
security FastAPI
90
55
FastAPI
Spring Boot
performance Tie
65
65
FastAPI
Spring Boot
ecosystem FastAPI
85
72
FastAPI
Spring Boot
ai readiness FastAPI
95
80
FastAPI
Spring Boot
developer experience FastAPI
88
70
FastAPI
Spring Boot
market trajectory FastAPI
70
65
FastAPI
Spring Boot
cost of ownership FastAPI
75
60
FastAPI
Spring Boot
Security details
Metric FastAPI Spring Boot
Total CVEs 8 250
Critical CVEs 0 25
Exploited (KEV) 0 3
CVEs last year 2 30
Avg CVSS 3.5 6.0
Security score 90/100 55/100
Recommended
FastAPI

FastAPI scores 83/100. Verdict: Recommended.

Acceptable
Spring Boot

Spring Boot scores 66/100. Verdict: Acceptable.

Quick facts
FastAPI
Category: Backend
Language: PYTHON
First release: 2018
Generation: Modern
Trend: Rising
Market share: 0.6%
Spring Boot
Category: Backend
Language: JAVA
First release: 2014
Generation: Modern
Trend: Rising
Market share: 2.0%
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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.