Affected versions of yargs-parser
are vulnerable to prototype pollution. Arguments are not properly sanitized, allowing an attacker to modify the prototype of Object
, causing the addition or modification of an existing property that will exist on all objects.
Parsing the argument --foo.__proto__.bar baz'
adds a bar
property with value baz
to all objects. This is only exploitable if attackers have control over the arguments being passed to yargs-parser
.
Upgrade to versions 13.1.2, 15.0.1, 18.1.1 or later.
{ "nvd_published_at": "2020-03-16T20:15:00Z", "github_reviewed_at": "2020-08-31T19:01:32Z", "severity": "MODERATE", "github_reviewed": true, "cwe_ids": [ "CWE-1321", "CWE-915" ] }