Highlights
Auth Bypass: 2 prior fixes. Scrutinize any change in this area.
conn.go: most-fixed (2 issues). Treat as high-risk during review.
3 high-severity fixes in this history; regressions here are high-impact.
Recurring patterns
The bug types that recur here, drawn from past fixes, not open vulnerabilities.
Auth Bypass: The client-side state machine previously omitted proper x509 certificate verification against root authorities, allowing arbitrary certificates to pass and exposing clients to silent MitM interception.
Auth Bypass: A critical state-machine bypass permitted applications to execute Read operations on the connection in non-blocking mode before the cryptographic handshake had actually completed.
Cryptographic Issues: Flawed TLS 1.3 PSK binder calculations used incorrect transcript hash inputs, undermining the cryptographic integrity and validation of the Finished handshake message.