CVE-2026-42338 (GCVE-0-2026-42338)

Vulnerability from cvelistv5 – Published: 2026-05-12 19:43 – Updated: 2026-07-09 12:09
VLAI
Title
ip-address: XSS in Address6 HTML-emitting methods
Summary
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.
Severity
5.3 (Medium)
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
8.1 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
URL Tags
https://github.com/beaugunderson/ip-address/secur… x_refsource_CONFIRM
https://access.redhat.com/security/cve/CVE-2026-42338 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2476810 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:35842 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:35841 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:35892 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:35891 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34374 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36754 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33574 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36820 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33155 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33160 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33163 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33173 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33183 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
beaugunderson ip-address Affected: < 10.1.1
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Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.2
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Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Ansible Automation Platform 2.6     cpe:/a:redhat:ansible_automation_platform:2.6::el9
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Red Hat Red Hat Developer Hub 1.10     cpe:/a:redhat:rhdh:1.10::el9
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Red Hat Red Hat Developer Hub 1.9     cpe:/a:redhat:rhdh:1.9::el9
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Red Hat Red Hat OpenShift Dev Spaces 3.29     cpe:/a:redhat:openshift_devspaces:3.29::el9
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Red Hat Red Hat OpenShift Service Mesh 2.6     cpe:/a:redhat:service_mesh:2.6::el8
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Red Hat Red Hat OpenShift Service Mesh 3.0     cpe:/a:redhat:service_mesh:3.0::el9
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Red Hat Red Hat OpenShift Service Mesh 3.1     cpe:/a:redhat:service_mesh:3.1::el9
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Red Hat Red Hat OpenShift Service Mesh 3.2     cpe:/a:redhat:service_mesh:3.2::el9
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Red Hat Red Hat OpenShift Service Mesh 3.3     cpe:/a:redhat:service_mesh:3.3::el9
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Red Hat Confidential Compute Attestation     cpe:/a:redhat:confidential_compute_attestation:1
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Red Hat Exploit Intelligence     cpe:/a:redhat:exploit_intelligence:0
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Red Hat Migration Toolkit for Containers     cpe:/a:redhat:rhmt:1
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Red Hat Multicluster Engine for Kubernetes     cpe:/a:redhat:multicluster_engine
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Red Hat OpenShift Pipelines     cpe:/a:redhat:openshift_pipelines:1
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Red Hat Red Hat AMQ Broker 7     cpe:/a:redhat:amq_broker:7
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Red Hat Red Hat build of Apache Camel - HawtIO 4     cpe:/a:redhat:apache_camel_hawtio:4
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Red Hat Red Hat Build of Podman Desktop     cpe:/a:redhat:podman_desktop:1
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Red Hat Red Hat Build of Podman Desktop - Tech Preview     cpe:/a:redhat:podman_desktop:0
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Red Hat Red Hat Enterprise Linux AI (RHEL AI) 3     cpe:/a:redhat:enterprise_linux_ai:3
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Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
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Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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Red Hat Red Hat Satellite 6     cpe:/a:redhat:satellite:6
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Red Hat Self-service automation portal 2     cpe:/a:redhat:ansible_portal:2
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Red Hat Cryostat 4     cpe:/a:redhat:cryostat:4
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2     cpe:/a:redhat:acm:2
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Red Hat Red Hat build of Apache Camel for Spring Boot 4     cpe:/a:redhat:camel_spring_boot:4
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Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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Red Hat Red Hat OpenShift Dev Spaces     cpe:/a:redhat:openshift_devspaces:3
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\"RHSA-2026:33155: Red Hat OpenShift Service Mesh 2.6\"}, {\"lang\": \"en\", \"value\": \"RHSA-2026:33160: Red Hat OpenShift Service Mesh 3.0\"}, {\"lang\": \"en\", \"value\": \"RHSA-2026:33163: Red Hat OpenShift Service Mesh 3.1\"}, {\"lang\": \"en\", \"value\": \"RHSA-2026:33173: Red Hat OpenShift Service Mesh 3.2\"}, {\"lang\": \"en\", \"value\": \"RHSA-2026:33183: Red Hat OpenShift Service Mesh 3.3\"}], \"x_adpType\": \"supplier\", \"datePublic\": \"2026-05-12T19:43:16.470Z\", \"references\": [{\"url\": \"https://access.redhat.com/security/cve/CVE-2026-42338\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2476810\", \"name\": \"RHBZ#2476810\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42338.json\", \"tags\": [\"x_sadp-csaf-vex\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:35842\", \"tags\": [\"vendor-advisory\", 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      "cveMetadata": "{\"cveId\": \"CVE-2026-42338\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-07-09T12:09:43.283Z\", \"dateReserved\": \"2026-04-26T13:26:14.514Z\", \"assignerOrgId\": \"a0819718-46f1-4df5-94e2-005712e83aaa\", \"datePublished\": \"2026-05-12T19:43:16.470Z\", \"assignerShortName\": \"GitHub_M\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.