CVE-2020-7641: Vulnerability in grunt-util-property package allows modification of Object.prototype

grunt-util-property Updated 02 Oct 2025

Summary

18/07/2022
No i
High
7.8

CVE-2020-7641: This affects all versions of package grunt-util-property. Affects grunt-util-property versions < 0.0.2. No fix is published. How to fix ↓

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Background

The grunt-util-property package is an npm package used in the Grunt build system. It provides utility functions for working with properties in JavaScript objects. The package is widely used in various projects and versions 0.0.2 and below are affected by a vulnerability.

Vulnerability Detail

The vulnerability in the grunt-util-property package allows an attacker to add or modify properties of the Object.prototype using a __proto__ payload. This can lead to unexpected behavior and potential security issues in applications that rely on the affected package. The vulnerability has a CVSS score of 7.8, indicating a high severity.

How To Fix

No fixed version is published for this vulnerability.

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Workaround

There is no specific workaround mentioned for this vulnerability. However, developers can mitigate the risk by avoiding the usage of the affected function or by implementing input validation and sanitization to prevent malicious payloads.

Conclusion

The grunt-util-property package is vulnerable to a high-severity issue that allows modification of the Object.prototype. It is crucial for developers to update their packages to a non-affected version and implement proper input validation to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.

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FAQ

The vulnerability allows an attacker to modify the Object.prototype, which can lead to unexpected behavior and potential security issues in applications that rely on the affected package.

All versions of the package up to and including 0.0.2 are affected by this vulnerability.

Yes, developers should update the grunt-util-property package to a version that is not affected by the vulnerability.

There are no known exploits for this vulnerability at the moment.

You can find more information about this vulnerability in the GitHub Advisory Database and the associated CVE entry.

How To Fix

No fixed version is published for this vulnerability.

Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →

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