OpenSSL 4.0.0 removes support for deprecated protocols (SSLv2, SSLv3), engine implementations, and makes breaking API changes including const qualifiers and opaque ASN1_STRING types. The release adds security improvements like PBKDF2 lower bounds checks, AKID verification, and expanded CRL verification. This major version represents a significant migration point for millions of applications depending on OpenSSL.
Infrastructure
OpenSSL 4.0.0
OpenSSL 4.0.0 forces a major ecosystem migration by removing SSLv2/v3 support and breaking APIs, reshaping cryptographic infrastructure across millions of applications.
Tuesday, April 14, 2026 12:00 PM UTC2 MIN READSOURCE: Hacker NewsBY sys://pipeline
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