Medium 5.3Published May 12, 2026

CVE-2026-42338ip-address: XSS in Address6 HTML-emitting methods

Updated under an hour ago (Oct 27, 2026, 12:50 PM ET)

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It affects beaugunderson ip-address and 26 other products. Add what you run to find out whether that includes you.

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Every CVE for beaugunderson ip-address

Exploited in the last 30 days

ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. Prior to 10.1.1, Address6.group() and Address6.link() do not HTML-escape attacker-controlled content before embedding it in the HTML strings they return, and AddressError.parseMessage (emitted by the Address6 constructor for invalid input) can contain unescaped attacker-controlled content in one branch. An application that (1) passes untrusted input to Address6 and (2) renders the output of these methods, or the thrown error's parseMessage, as HTML (e.g. via innerHTML) is vulnerable to cross-site scripting. This vulnerability is fixed in 10.1.1.

CVSS: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Modified
Record last updated: Sep 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

beaugunderson ip-address beaugunderson:ip_address (from the name)	before 10.1.1	CNA record
Red Hat Red Hat AMQ Broker 7.13.6 redhat:amq_broker	7.13	CISA ADP
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux	from 1:24.18.0-1.el10_2 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus	from 1:22.23.1-2.el10_0 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus	from 9060020260804140259.rhel9 not affected	CISA ADP
Red Hat Red Hat Ansible Automation Platform 2.6 redhat:ansible_automation_platform	from 1782721130 not affected	CISA ADP
Red Hat Red Hat Developer Hub 1.10 redhat:rhdh	from 1783448184 not affected	CISA ADP
Red Hat Red Hat Enterprise Linux AI 3.3 redhat:enterprise_linux_ai	from 1788290314 not affected	CISA ADP
Red Hat Red Hat Migration Toolkit 1.8 redhat:rhmt	from 1783690532 not affected	CISA ADP
Red Hat Red Hat OpenShift AI 2.25 redhat:openshift_ai	from 1787801527 not affected	CISA ADP
1–10 of 27

References

References

https://github.com/beaugunderson/ip-address/security/advisories/GHSA-v2v4-37r5-5v8g	x-refsource-confirm, exploit, mitigation, vendor-advisory
https://access.redhat.com/errata/RHSA-2026:33155
https://access.redhat.com/errata/RHSA-2026:33160
https://access.redhat.com/errata/RHSA-2026:33163
https://access.redhat.com/errata/RHSA-2026:33173
https://access.redhat.com/errata/RHSA-2026:33183
https://access.redhat.com/errata/RHSA-2026:33574
https://access.redhat.com/errata/RHSA-2026:34374
https://access.redhat.com/errata/RHSA-2026:35841
https://access.redhat.com/errata/RHSA-2026:35842
1–10 of 25

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.