Hello gophers,
The go1.25rc2 release includes 1 security fix following the security policy <https://go.dev/security>: - cmd/go: unexpected command execution in untrusted VCS repositories Various uses of the Go toolchain in untrusted VCS repositories can result in unexpected code execution. When using the Go toolchain in directories fetched using various VCS tools (such as directly cloning Git or Mercurial repositories) can cause the toolchain to execute unexpected commands, if said directory contains multiple VCS configuration metadata (such as a '.hg' directory in a Git repository). This is due to how the Go toolchain attempts to resolve which VCS is being used in order to embed build information in binaries and determine module versions. The toolchain will now abort attempting to resolve which VCS is being used if it detects multiple VCS configuration metadata in a module directory or nested VCS configuration metadata (such as a '.git' directoy in a parent directory and a '.hg' directory in a child directory). This will not prevent the toolchain from building modules, but will result in binaries omitting VCS related build information. If this behavior is expected by the user, the old behavior can be re-enabled by setting GODEBUG=allowmultiplevcs=1. This should only be done in trusted repositories. Thanks to RyotaK (https://ryotak.net) of GMO Flatt Security Inc for reporting this issue. This is CVE-2025-4674 and https://go.dev/issue/74380. Thanks to everyone who contributed to the release. Cheers, Carlos and David for the Go team On Tuesday, July 8, 2025 at 1:40:44 PM UTC-4 annou...@golang.org wrote: > Hello gophers, > > We have just released go1.25rc2, a release candidate version of Go 1.25. > It is cut from release-branch.go1.25 at the revision tagged go1.25rc2. > > Please try your production load tests and unit tests with the new version. > Your help testing these pre-release versions is invaluable. > > Report any problems using the issue tracker: > https://go.dev/issue/new > > If you have Go installed already, an easy way to try go1.25rc2 > is by using the go command: > > $ go install golang.org/dl/go1.25rc2@latest > $ go1.25rc2 download > > You can download binary and source distributions from the usual place: > https://go.dev/dl/#go1.25rc2 > > To find out what has changed in Go 1.25, read the draft release notes: > https://tip.golang.org/doc/go1.25 > > Cheers, > Carlos and David for the Go team > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/golang-nuts/6745e867-9475-4342-bde4-5d5a1241fd74n%40googlegroups.com.
