Go through 1.15.12 and 1.16.x through 1.16.4 has a golang.org/x/net/html infinite loop via crafted ParseFragment input.
github.com/golang/net/commit/37e1c6afe02340126705deced573a85ab75209d7
go.dev/cl/311090
go.dev/issue/46288
go.googlesource.com/net/+/37e1c6afe02340126705deced573a85ab75209d7
groups.google.com/g/golang-announce/c/wPunbCPkWUg
lists.fedoraproject.org/archives/list/[email protected]/message/4CHKSFMHZVOBCZSSVRE3UEYNKARTBMTM
nvd.nist.gov/vuln/detail/CVE-2021-33194
pkg.go.dev/vuln/GO-2021-0238