Cross-site scripting in ip-address - CVE-2026-42338

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Main Vulnerability Database Vulnerabilities #VU146519

Cross-site scripting in ip-address - CVE-2026-42338

Published: August 31, 2026


Vulnerability identifier: #VU146519
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]
CVE-ID: CVE-2026-42338
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary script in a victim\'s browser.

The vulnerability exists due to cross-site scripting in Address6.group(), Address6.link(), and AddressError.parseMessage handling when rendering untrusted Address6 input or related HTML output as HTML. A remote attacker can supply crafted input or option values to inject script and execute arbitrary script in a victim\'s browser.

User interaction is required because a victim application must render the returned HTML or parseMessage as HTML.


Affected software

ip-address
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Fedora
Red Hat OpenShift Container Platform
nodejs22 (Red Hat package)
nodejs22
nodejs24

How to mitigate CVE-2026-42338

Install security update from vendor's website.

ip-address - update to 10.1.1
Red Hat OpenShift Container Platform - addressed in versions 4.20.31, 4.21.26
nodejs22 (Red Hat package) - update to 22.23.1-2.el10_0
nodejs22 - update to 22.23.1-2.fc44
nodejs24 - update to 24.18.0-1.fc44

External References

Related Security Bulletins