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Radar · Go · Archive · Week 23 · Jun 1 – 7, 2026

go1.26.4 released

Worth knowingecosystem

What changed
The release includes security fixes to crypto/x509, mime, and net/textproto, bug fixes to the compiler, runtime, go fix, and crypto/fips140.
Production impact
The source does not say.
Try it
Upgrade to 1.26.4 and run go vet ./... to check for any new vet warnings.
Source
go.dev/doc/devel/release#go1.26.4

Understand it, then run it

The Go 1.26.4 release adds security fixes to three packages: crypto/x509, mime, and net/textproto. It also fixes bugs in the compiler, runtime, the go fix command, and the crypto/fips140 package. The changes are part of the normal maintenance cycle for a supported Go release. No new language features or APIs are introduced.

Written by gpt-oss-20b from the linked source · claims checked against the sources · archive, not individually reviewed