OpenSSL 4.1.0 adds DTLS 1.3 and ships four known DTLS bugs
Two bugs can misreport connection state, one can abort handshakes after packet loss, and KeyUpdate can drop a lost NewSessionTicket.
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Two bugs can misreport connection state, one can abort handshakes after packet loss, and KeyUpdate can drop a lost NewSessionTicket.
OpenSSL patched CVE-2026-84782, a high-severity DTLS flaw that can leak heap memory or crash servers.
OpenSSL 4.1.0 Alpha1 adds DTLS 1.3 support, ML-DSA and ML-KEM post-quantum optimizations, and GREASE TLS compatibility, intended for testing only.
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