CVE-2026-43013: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-w9xj-xj3x-qgjh
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CVSS 5.5
CWE-476
Published
Advisory Summary

CVE-2026-43013 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-476: NULL Pointer Dereference) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product dereferences a pointer that it expects to be valid but is null.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-43013 at a Glance

CVE Identifier CVE-2026-43013
GHSA Identifier GHSA-w9xj-xj3x-qgjh
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-476: NULL Pointer Dereference
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

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:N/I:N/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 None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-43013

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-2026-43013, 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-476: NULL Pointer Dereference, where the product dereferences a pointer that it expects to be valid but is null. 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/mlx5: lag: Check for LAG device before creating debugfs __mlx5_lag_dev_add_mdev() may return 0 (success) even when an error occurs that is handled gracefully. Consequently, the initialization flow proceeds to call mlx5_ldev_add_debugfs() even when there is no valid LAG context. mlx5_ldev_add_debugfs() blindly created the debugfs directory and attributes. This exposed interfaces (like the members file) that rely on a valid ldev pointer, leading to potential NULL pointer dereferences if accessed when ldev is NULL. Add a check to verify that mlx5_lag_dev(dev) returns a valid pointer before attempting to create the debugfs entries.

References

NVD — CVE-2026-43013 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43013
git.kernel.org/stable/c/7129632cab... WEB
https://git.kernel.org/stable/c/7129632cab3e4d23510b21930aa73b8d97a859f5
git.kernel.org/stable/c/89c65f2fcd... WEB
https://git.kernel.org/stable/c/89c65f2fcd8801365b410f40a427cbcd7f4c28e9
git.kernel.org/stable/c/a3db46d5f4... WEB
https://git.kernel.org/stable/c/a3db46d5f4df92630a96f7bc77b60e75c2353e06
git.kernel.org/stable/c/bf16bca665... WEB
https://git.kernel.org/stable/c/bf16bca6653679d8a514d6c1c5a2c67065033f14
git.kernel.org/stable/c/c53cf44588... WEB
https://git.kernel.org/stable/c/c53cf44588a93000f71817a6bb87a66353c48dee
git.kernel.org/stable/c/cfa774e6c9... WEB
https://git.kernel.org/stable/c/cfa774e6c920c81e700327bf10db8cb50d5db456

Frequently Asked Questions

What is CVE-2026-43013?
CVE-2026-43013 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-476: NULL Pointer Dereference.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-43013?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-43013?
CVE-2026-43013 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-43013?
CVE-2026-43013 is classified under CWE-476: NULL Pointer Dereference (The product dereferences a pointer that it expects to be valid but is NULL.).
How can I check Maven dependencies for CVE-2026-43013?
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-w9xj-xj3x-qgjh",
  "modified" : "2026-05-07T21:30:24Z",
  "published" : "2026-05-01T15:30:36Z",
  "aliases" : [ "CVE-2026-43013" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/mlx5: lag: Check for LAG device before creating debugfs\n\n__mlx5_lag_dev_add_mdev() may return 0 (success) even when an error\noccurs that is handled gracefully. Consequently, the initialization\nflow proceeds to call mlx5_ldev_add_debugfs() even when there is no\nvalid LAG context.\n\nmlx5_ldev_add_debugfs() blindly created the debugfs directory and\nattributes. This exposed interfaces (like the members file) that rely on\na valid ldev pointer, leading to potential NULL pointer dereferences if\naccessed when ldev is NULL.\n\nAdd a check to verify that mlx5_lag_dev(dev) returns a valid pointer\nbefore attempting to create the debugfs entries.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
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  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/7129632cab3e4d23510b21930aa73b8d97a859f5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/89c65f2fcd8801365b410f40a427cbcd7f4c28e9"
  }, {
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  "database_specific" : {
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    "nvd_published_at" : "2026-05-01T15:16:45Z"
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}