Remote code execution in go get, when executed with the -u flag (CVE-2018-16873). An arbitrary filesystem write in go get, which could lead to code execution (CVE-2018-16874). Denial of Service in the crypto/x509 package during certificate chain validation (CVE-2018-16875). Go before 1.11.5 mishandles P-521 and P-384 elliptic curves, which allows attackers to cause a denial of service (CPU consumption) or possibly conduct ECDH private key recovery attacks (CVE-2019-6486).