XSS via ip-address JS lib <10.1.1: Address6.group & link not escaped
CVE-2026-42338 Published on May 12, 2026

ip-address: XSS in Address6 HTML-emitting methods
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.

NVD

Vulnerability Analysis

CVE-2026-42338 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2026-42338. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
REQUIRED
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
NONE

Weakness Type

What is a XSS Vulnerability?

The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

CVE-2026-42338 has been classified to as a XSS vulnerability or weakness.


Products Associated with CVE-2026-42338

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Red Hat Service Mesh
 
Red Hat Confidential Compute Attestation
 
Red Hat Cryostat
 
Red Hat Exploit Intelligence
 
Red Hat Rhmt
 
Red Hat Multicluster Engine
 
Red Hat Openshift Pipelines
 
Red Hat Amq Broker
 
Red Hat Ansible Automation Platform
 
Red Hat Apache Camel Hawtio
 
Red Hat Podman Desktop
 
Red Hat Rhdh
 
Red Hat Enterprise Linux (RHEL)
 
Red Hat Enterprise Linux Ai
 
Red Hat Hummingbird
 
Red Hat Openshift Ai
 
Red Hat Openshift
 
Red Hat Openshift Devspaces
 
Red Hat Satellite
 
Red Hat Ansible Portal
 
Red Hat Acm
 
Red Hat Camel Spring Boot
 

Affected Versions

beaugunderson ip-address: Red Hat OpenShift Service Mesh 2.6: Red Hat OpenShift Service Mesh 3.0: Red Hat OpenShift Service Mesh 3.1: Red Hat OpenShift Service Mesh 3.2: Red Hat OpenShift Service Mesh 3.3: Red Hat Confidential Compute Attestation: Red Hat Cryostat 4: Red Hat Exploit Intelligence: Red Hat Migration Toolkit for Containers: Red Hat Multicluster Engine for Kubernetes: Red Hat OpenShift Pipelines: Red Hat AMQ Broker 7: Red Hat Ansible Automation Platform 2: Red Hat build of Apache Camel - HawtIO 4: Red Hat Build of Podman Desktop: Red Hat Build of Podman Desktop - Tech Preview: Red Hat Developer Hub: Red Hat Enterprise Linux 10: Red Hat Enterprise Linux 9: Red Hat Enterprise Linux AI (RHEL AI) 3: Red Hat Hardened Images: Red Hat OpenShift AI (RHOAI): Red Hat OpenShift Container Platform 4: Red Hat OpenShift Dev Spaces: Red Hat Satellite 6: Red Hat Self-service automation portal 2: Red Hat Advanced Cluster Management for Kubernetes 2: Red Hat build of Apache Camel for Spring Boot 4:

Exploit Probability

EPSS
0.26%
Percentile
16.92%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.