In x/text in Go before v0.3.5, a "slice bounds out of range" panic occurs in language.ParseAcceptLanguage while processing a BCP 47 tag. (x/text/language is supposed to be able to parse an HTTP Accept-Language header.)Referenceshttps://github.com/golang/go/issues/42536https://security.netapp.com/advisory/ntap-20210212-0004/