Authorization Bypass Vulnerability in Go's net/url Library

CVE-2019-14809 · HIGH Severity

AV:N/AC:L/AU:N/C:P/I:P/A:P

net/url in Go before 1.11.13 and 1.12.x before 1.12.8 mishandles malformed hosts in URLs, leading to an authorization bypass in some applications. This is related to a Host field with a suffix appearing in neither Hostname() nor Port(), and is related to a non-numeric port number. For example, an attacker can compose a crafted javascript:// URL that results in a hostname of google.com.

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