Versions of lodash before 4.17.5 are vulnerable to prototype pollution.
The vulnerable functions are 'defaultsDeep', 'merge', and 'mergeWith' which allow a malicious user to modify the prototype of Object via __proto__ causing the addition or modification of an existing property that will exist on all objects.
Update to version 4.17.5 or later.
{
"nvd_published_at": "2018-06-07T02:29:08Z",
"severity": "MODERATE",
"cwe_ids": [
"CWE-1321",
"CWE-471"
],
"github_reviewed": true,
"github_reviewed_at": "2020-06-16T21:35:26Z"
}