Affected versions of
minimist 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
--__proto__.y=Polluted adds a
y property with value
Polluted to all objects. The argument
--__proto__=Polluted raises and uncaught error and crashes the application.
This is exploitable if attackers have control over the arguments being passed to
Upgrade to versions 0.2.1, 1.2.3 or later.