CVE-2026-23447: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-vf6v-fqr8-5xhj
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CVSS 7.8
CWE-129
Published
Advisory Summary

CVE-2026-23447 is a HIGH (CVSS 7.8) security vulnerability vulnerability (CWE-129: Improper Validation of Array Index) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-23447 at a Glance

CVE Identifier CVE-2026-23447
GHSA Identifier GHSA-vf6v-fqr8-5xhj
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-129: Improper Validation of Array Index
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-23447

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-23447, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-129: Improper Validation of Array Index, where the product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

In the Linux kernel, the following vulnerability has been resolved: net: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check The same bounds-check bug fixed for NDP16 in the previous patch also exists in cdc_ncm_rx_verify_ndp32(). The DPE array size is validated against the total skb length without accounting for ndpoffset, allowing out-of-bounds reads when the NDP32 is placed near the end of the NTB. Add ndpoffset to the nframes bounds check and use struct_size_t() to express the NDP-plus-DPE-array size more clearly. Compile-tested only.

References

NVD — CVE-2026-23447 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23447
git.kernel.org/stable/c/125f932a76... WEB
https://git.kernel.org/stable/c/125f932a76a97904ef8a555f1dd53e5d0e288c54
git.kernel.org/stable/c/7791425515... WEB
https://git.kernel.org/stable/c/77914255155e68a20aa41175edeecf8121dac391
git.kernel.org/stable/c/a5bd5a2710... WEB
https://git.kernel.org/stable/c/a5bd5a2710310c965ea4153cba4210988a3454e2
git.kernel.org/stable/c/af0d1613d6... WEB
https://git.kernel.org/stable/c/af0d1613d6751489dbf9f69aac1123f0b1e566e5
git.kernel.org/stable/c/baf246d668... WEB
https://git.kernel.org/stable/c/baf246d6680befde2086b1df9eb3aaba3fb6853f
git.kernel.org/stable/c/de70da1fb1... WEB
https://git.kernel.org/stable/c/de70da1fb1d152e981ecb3157f7ec2b633005c16

Frequently Asked Questions

What is CVE-2026-23447?
CVE-2026-23447 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-129: Improper Validation of Array Index.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-23447?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-23447?
CVE-2026-23447 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-23447?
CVE-2026-23447 is classified under CWE-129: Improper Validation of Array Index (The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.).
How can I check Maven dependencies for CVE-2026-23447?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
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  "id" : "GHSA-vf6v-fqr8-5xhj",
  "modified" : "2026-09-14T12:31:28Z",
  "published" : "2026-04-03T18:31:21Z",
  "aliases" : [ "CVE-2026-23447" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: cdc_ncm: add ndpoffset to NDP32 nframes bounds check\n\nThe same bounds-check bug fixed for NDP16 in the previous patch also\nexists in cdc_ncm_rx_verify_ndp32(). The DPE array size is validated\nagainst the total skb length without accounting for ndpoffset, allowing\nout-of-bounds reads when the NDP32 is placed near the end of the NTB.\n\nAdd ndpoffset to the nframes bounds check and use struct_size_t() to\nexpress the NDP-plus-DPE-array size more clearly.\n\nCompile-tested only.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/77914255155e68a20aa41175edeecf8121dac391"
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  "database_specific" : {
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    "nvd_published_at" : "2026-04-03T16:16:30Z"
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