Server-Side Request Forgery in private-ip

published 2020-11-23 5y ago modified 2026-06-17 4mo ago also GHSA-43ch-2h55-2vj7 , EUVD-2021-0751

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 3.1%; EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits: 0; none known

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.

Patch / fix

fixed in 1 links 1

npm private-ip 2.0.0

github.com/frenchbread/private-ip@840664c commit

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Exploit prediction

3.08% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem	package	affected	fixed in
npm	private-ip	<2.0.0	2.0.0

Classification

Weakness

CWE-918 Server-Side Request Forgery

References

github.com /frenchbread/private-ip/commit/840664c4b9ba7888c41cfee9666e9a593db133e9
web
npmjs.com /package/private-ip
web, third-party-advisory
github.com /frenchbread/private-ip
web, third-party-advisory
nvd.nist.gov /vuln/detail/CVE-2020-28360
advisory
johnjhacking.com /blog/cve-2020-28360
web

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.