CVE-2026-54272: ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript

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MEDIUM 6.9REMOTE

CVE-2026-54272 is a medium-severity flaw (CVSS 6.9) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. Versions 10.1.1 through 10.2.0 are vulnerable to SSRF through misclassification of IPv4-mapped/NAT64 IPv6 addresses. Address6.getType() classifies an address by matching it against a table of known IPv6 special-use prefixes, returning Global unicast when nothing matches. That table had no entry for the IPv4-mapped range (::ffff:0:0/96), so every mapped add

Why this priority

CISA SSVC: public proof of concept
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	6.9 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 67%)
CISA exploited list	No
Weakness	CWE-20, CWE-918
Published	2026-07-27
Last modified	2026-10-24

Publisher (CNA): GitHub, Inc.

Last updated 2026-10-24 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-07-27 18:16 UTCPublished CVE record published
2026-10-24 13:10 UTCUpdated Record last modified

Exact fixes by distribution

npm · ip-address · FIXED · 10.2.1 · vulnerable: >= 10.1.1, <= 10.2.0 · source

npm install ip-address@">=10.2.1" npm ls ip-address

Fedora 46 · sugar-toolkit-gtk3 · FIXED · 0.122-2.fc46 · FEDORA-2026-d11eb2faf0 · source

sudo dnf upgrade --advisory=FEDORA-2026-d11eb2faf0

Fedora ELN · ntpd-rs · FIXED · 1.7.2-3.eln159 · FEDORA-2026-57e4a99310 · source

sudo dnf upgrade --advisory=FEDORA-2026-57e4a99310

Debian 12 · node-ip-address · NOT AFFECTED

Debian 13 · node-ip-address · NOT AFFECTED

RHEL 10 · nodejs24 · FIXED · nodejs24-24.18.0-5.el10_2

sudo dnf upgrade --advisory=RHSA-2026:58819 rpm -q nodejs24

RHEL 10 · nodejs22 · NOT AFFECTED

RHEL 10 · rust · NOT AFFECTED

RHEL 8 · nodejs:22/nodejs · NOT AFFECTED

RHEL 9 · rust · NOT AFFECTED

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Write-up: github.com/beaugunderson/ip-address/security/advisories/GHSA-22jq-vg5j-6vgg

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-2026-54272?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-54272 being exploited?

CVE-2026-54272 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-2026-54272 affect?

CVE-2026-54272 affects affected software. Severity is medium (CVSS 6.9). ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. Versions 10.1.1 through 10.2.0 are vulnerable to SSRF through misclassification of IPv4-mapped/NAT64 IPv6 addresses. Address6.getType() classifies a

How urgent is CVE-2026-54272?

Priority 40/100. CISA SSVC: public proof of concept; Remotely exploitable, no login, no user action

References

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