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

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2020-28360 is a critical-severity flaw (CVSS 9.8) affecting private-ip. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.1% (top 12%)
CISA exploited list	No
Weakness	CWE-918
Published	2020-11-23
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: private-ip project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2020-11-23 21:15 UTCPublished CVE record published
2026-06-17 03:10 UTCUpdated Record last modified

private-ip project private-ip UPGRADE

Affected: <= 1.0.5

Fixed in: newer than 1.0.5

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls private-ip

2. UPGRADE to newer than 1.0.5

npm install private-ip@">1.0.5"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2020-28360?

private-ip: upgrade to newer than 1.0.5. Exact commands for each OS are on this page.

Is CVE-2020-28360 being exploited?

CVE-2020-28360 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2020-28360 affect?

CVE-2020-28360 affects private-ip. Severity is critical (CVSS 9.8). 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 indetermi

How urgent is CVE-2020-28360?

Priority 61/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

npm packages vulnerabilities

References

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