Question 1

What is the EOL Risk Score for React 17?

Accepted Answer

React 17 has an EOL Risk Score™ of 70 out of 100, placing it in the High risk band. The score is calculated from four factors: Time Out of Support (30/40), Attack Surface (20/30), CISA KEV Exposure (20/20), and Extended Support Availability (0/10).

Question 2

Is React 17 still supported?

Accepted Answer

React 17 is currently supported. End of life is scheduled for a future date. Plan your migration before that date to avoid security risk.

Question 3

When does React 17 reach end of life?

Accepted Answer

The end of life date for React 17 is not yet scheduled. Check the full React version timeline at endoflife.ai/react.html for the latest information.

Question 4

What are the security risks of running React 17 after end of life?

Accepted Answer

After end of life, React 17 no longer receives security patches. Any newly discovered CVEs remain unpatched indefinitely. Organizations running EOL software also face compliance violations under SOC 2, PCI DSS, HIPAA, and ISO 27001, which require use of supported software versions.