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Open Source NewsOctober 8, 20262 min read

Go 1.27.2 and Go 1.26.9 Released with 15 Security Fixes

By BIOS Founding Team

Go 1.27.2 and Go 1.26.9 Released with 15 Security Fixes

The point releases fix 15 security issues. Most are in net/http: HTTP/2 server crashes, memory and CPU exhaustion, and HTTP/1 CONNECT-related request smuggling and desync.

Others cover crypto/tls ECH memory exhaustion, cmd/go checksum bypasses, html/template escaping bugs, MIME header limit bypasses and a Windows os.Root junction escape. Go 1.27.2 also has bug fixes for the compiler, linker, runtime and encoding/json, so users on 1.27 and 1.26 should upgrade.

Full details: https://go.dev/doc/devel/release#go1.27.2