CVE-2026-23448: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-pjhh-88pp-3hg6
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CVSS 7.8
CWE-129
Published
Advisory Summary

CVE-2026-23448 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-2026-23448 at a Glance

CVE Identifier CVE-2026-23448
GHSA Identifier GHSA-pjhh-88pp-3hg6
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-2026-23448

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-2026-23448, 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 NDP16 nframes bounds check cdc_ncm_rx_verify_ndp16() validates that the NDP header and its DPE entries fit within the skb. The first check correctly accounts for ndpoffset: if ((ndpoffset + sizeof(struct usb_cdc_ncm_ndp16)) > skb_in->len) but the second check omits it: if ((sizeof(struct usb_cdc_ncm_ndp16) + ret * (sizeof(struct usb_cdc_ncm_dpe16))) > skb_in->len) This validates the DPE array size against the total skb length as if the NDP were at offset 0, rather than at ndpoffset. When the NDP is placed near the end of the NTB (large wNdpIndex), the DPE entries can extend past the skb data buffer even though the check passes. cdc_ncm_rx_fixup() then reads out-of-bounds memory when iterating the DPE array. Add ndpoffset to the nframes bounds check and use struct_size_t() to express the NDP-plus-DPE-array size more clearly.

References

NVD — CVE-2026-23448 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23448
git.kernel.org/stable/c/2aa8a4fa8d... WEB
https://git.kernel.org/stable/c/2aa8a4fa8d5b7d0e1ebcec100e1a4d80a1f4b21a
git.kernel.org/stable/c/403f94ddcb... WEB
https://git.kernel.org/stable/c/403f94ddcb36c552fbef51dea735b131e3dcde8b
git.kernel.org/stable/c/63c35b8fce... WEB
https://git.kernel.org/stable/c/63c35b8fce77a7892e8fa06c540d4943145506eb
git.kernel.org/stable/c/789204f980... WEB
https://git.kernel.org/stable/c/789204f980730258c983102c027c375238009c80
git.kernel.org/stable/c/dce9dda0e3... WEB
https://git.kernel.org/stable/c/dce9dda0e3707e887977db44407989e9ead26611
git.kernel.org/stable/c/f1c7701d3a... WEB
https://git.kernel.org/stable/c/f1c7701d3ac91b62d672c13690cf295821f0d5c3

Frequently Asked Questions

What is CVE-2026-23448?
CVE-2026-23448 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-2026-23448?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-23448?
CVE-2026-23448 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-2026-23448?
CVE-2026-23448 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-2026-23448?
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-pjhh-88pp-3hg6",
  "modified" : "2026-09-14T12:31:28Z",
  "published" : "2026-04-03T18:31:21Z",
  "aliases" : [ "CVE-2026-23448" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: usb: cdc_ncm: add ndpoffset to NDP16 nframes bounds check\n\ncdc_ncm_rx_verify_ndp16() validates that the NDP header and its DPE\nentries fit within the skb. The first check correctly accounts for\nndpoffset:\n\n  if ((ndpoffset + sizeof(struct usb_cdc_ncm_ndp16)) > skb_in->len)\n\nbut the second check omits it:\n\n  if ((sizeof(struct usb_cdc_ncm_ndp16) +\n       ret * (sizeof(struct usb_cdc_ncm_dpe16))) > skb_in->len)\n\nThis validates the DPE array size against the total skb length as if\nthe NDP were at offset 0, rather than at ndpoffset. When the NDP is\nplaced near the end of the NTB (large wNdpIndex), the DPE entries can\nextend past the skb data buffer even though the check passes.\ncdc_ncm_rx_fixup() then reads out-of-bounds memory when iterating\nthe DPE array.\n\nAdd ndpoffset to the nframes bounds check and use struct_size_t() to\nexpress the NDP-plus-DPE-array size more clearly.",
  "severity" : [ {
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    "type" : "ADVISORY",
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    "url" : "https://git.kernel.org/stable/c/2aa8a4fa8d5b7d0e1ebcec100e1a4d80a1f4b21a"
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  "database_specific" : {
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    "severity" : "HIGH",
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    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-04-03T16:16:30Z"
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}