GHSA-69CH-W2M2-3VJP golang.org/x/text/language Denial of service via crafted Accept-Language header

The BCP 47 tag parser has quadratic time complexity due to inherent aspects of its design. Since the parser is, by design, exposed to untrusted user input, this can be leveraged to force a program to consume significant time parsing Accept-Language headers. The parser cannot be easily rewritten t...