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Fix "CERTIFICATE_VERIFY_FAILED": Self-Signed Certificates in Python requests, curl and Node

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Self-Hosting & Infra intermediate 6 min read $0.01 Updated 2026-10-20

Reproduced against a local self-signed HTTPS server: requests SSLError, curl exit 60, fixing with verify= or --cacert, REQUESTS_CA_BUNDLE, why -k is dangerous, SAN hostname matching, and the requests exception hierarchy.

Python, curl or Node refuses an HTTPS endpoint with a certificate error. Read the exact error, trust your own CA properly instead of disabling verification, and diagnose hostname, chain and date problems.

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#ssl#tls#python#curl#certificates

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