Description
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.
Affected products
beaugunderson: ip-address
References10
- github.com/beaugunderson/ip-address/security/advisories/GHSA-v2… ExploitMitigationVendor Advisory
- github.com/beaugunderson/ip-address/security/advisories/GHSA-v2… ExploitMitigationVendor Advisory
- access.redhat.com/errata/RHSA-2026:33155
- access.redhat.com/errata/RHSA-2026:33160
- access.redhat.com/errata/RHSA-2026:33163
- access.redhat.com/errata/RHSA-2026:33173
- access.redhat.com/errata/RHSA-2026:33183
- access.redhat.com/errata/RHSA-2026:33574
- access.redhat.com/errata/RHSA-2026:34374
- access.redhat.com/errata/RHSA-2026:35841
Metrics
- CVSS 3.1
-
6.1
MEDIUM
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 4.0
-
5.3
MEDIUM
Score source: 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 41 · as of 14 November 2026
- CWE
- CWE-79
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.