$ govulncheck -dir ${moddir}/vuln -v . --> FAIL 3
govulncheck is an experimental tool. Share feedback at https://go.dev/s/govulncheck-feedback.

Using go1.18 and govulncheck@v0.0.0-00000000000-20000101010101 with
vulnerability data from testdata/vulndb (last modified 01 Jan 21 00:00 UTC).

Scanning your code and P packages across M dependent modules for known vulnerabilities...
Your code is affected by 1 vulnerability from 1 module.

Vulnerability #1: GO-2021-0113
  Due to improper index calculation, an incorrectly formatted
  language tag can cause Parse to panic via an out of bounds read.
  If Parse is used to process untrusted user inputs, this may be
  used as a vector for a denial of service attack.

  More info: https://pkg.go.dev/vuln/GO-2021-0113

  Module: golang.org/x/text
    Found in: golang.org/x/text@v0.3.0
    Fixed in: golang.org/x/text@v0.3.7

    Call stacks in your code:
      #1: for function Parse
        golang.org/vuln.main
            .../vuln.go:12:16
        golang.org/x/text/language.Parse

=== Informational ===

Found 2 vulnerabilities in packages that you import, but there are no call
stacks leading to the use of these vulnerabilities. You may not need to
take any action. See https://pkg.go.dev/golang.org/x/vuln/cmd/govulncheck
for details.

Vulnerability #1: GO-2022-0592
  A maliciously crafted path can cause Get and other query
  functions to consume excessive amounts of CPU and time.
  More info: https://pkg.go.dev/vuln/GO-2022-0592
  Found in: github.com/tidwall/gjson@v1.9.2
  Fixed in: github.com/tidwall/gjson@v1.9.3

Vulnerability #2: GO-2021-0265
  GJSON allowed a ReDoS (regular expression denial of service)
  attack.
  More info: https://pkg.go.dev/vuln/GO-2021-0265
  Found in: github.com/tidwall/gjson@v1.9.2
  Fixed in: github.com/tidwall/gjson@v1.9.3
  Platforms: linux/amd64, windows/amd64