govulncheck documentation states that one can "use the -db flag to specify a different database...." This information is also available through govulncheck -help and by following the documentation links on the database.

So if you have a local database at /path/to/db, you can run govulncheck -db file:///path/to/db.

We'll provide instructions on how to download the Go vulnerability database locally soon.

Hello, we have just released a new feature that allows bulk download of the Go vulnerability database. It is available at https://vuln.go.dev/vulndb.zip.

For example, to download and unzip the database, and run govulncheck with it:

$ curl https://vuln.go.dev/vulndb.zip -s --output vulndb.zip
$ unzip -qq vulndb.zip -d vulndb
$ govulncheck -db file://$PWD/vulndb -version ./...