NPM IP package incorrectly identifies some private IP addresses as public
The isPublic() function in the NPM package ip doesn't correctly identify certain private IP addresses in uncommon formats such as 0x7F.1 as private. Instead, it reports them as public by returning true. This can lead to security issues such as Server-Side Request Forgery (SSRF) if isPublic() is used to protect sensitive code paths when passed user input. Versions 1.1.9 and 2.0.1 fix the issue.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | ip | >= 2.0.0, < 2.0.1, < 1.1.9 | 2.0.1, 1.1.9 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2023-42282
- https://github.com/JoshGlazebrook/socks/issues/93#issue-2128357447
- https://github.com/github/advisory-database/pull/3504#issuecomment-1937179999
- https://github.com/indutny/node-ip/pull/138
- https://github.com/indutny/node-ip/commit/32f468f1245574785ec080705737a579be1223aa
- https://github.com/indutny/node-ip/commit/6a3ada9b471b09d5f0f5be264911ab564bf67894
- https://cosmosofcyberspace.github.io/npm_ip_cve/npm_ip_cve.html
- https://github.com/indutny/node-ip
- Weakness (CWE)
CWE-918- Platform
- npm
- Package
ip- Disclosed
- 08.02.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-78xj-cgh5-2h22 - CC BY 4.0
Vulnerability history: ip
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 02.2024 06.2024
- Without a fix
- 1
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Low 1
Disclosures per year
- 2024: 2
- 2025: 0
- 2026: 0
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NPM IP package incorrectly identifies some private IP addresses as public this entry
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