It was possible to improperly access the parent directory of an os.Root by opening a filename ending in "../". For example, Root.Open("../") would open the parent directory of the Root. This escape only permits opening the parent directory itself, not ancestors of the parent or files contained within the parent.
{
"cpes": [
"cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*"
],
"severity": "Low"
}