CVE-2026-31418: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-vwvf-62c8-j66c
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CVSS 5.5
Published
Advisory Summary

CVE-2026-31418 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-31418 at a Glance

CVE Identifier CVE-2026-31418
GHSA Identifier GHSA-vwvf-62c8-j66c
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification General Security Weakness
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-2026-31418

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-2026-31418, 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 General Security Weakness. 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: netfilter: ipset: drop logically empty buckets in mtype_del mtype_del() counts empty slots below n->pos in k, but it only drops the bucket when both n->pos and k are zero. This misses buckets whose live entries have all been removed while n->pos still points past deleted slots. Treat a bucket as empty when all positions below n->pos are unused and release it directly instead of shrinking it further.

References

NVD — CVE-2026-31418 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31418
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-457936.html
git.kernel.org/stable/c/58f3a14826... WEB
https://git.kernel.org/stable/c/58f3a14826d4e6b0d5421f1a64be280b48601ea2
git.kernel.org/stable/c/68ca0eea0a... WEB
https://git.kernel.org/stable/c/68ca0eea0af02bed36c5e2c13e9fa1647c31a7d4
git.kernel.org/stable/c/6cea34d7ec... WEB
https://git.kernel.org/stable/c/6cea34d7ec6829b62f521a37a287f670144a2233
git.kernel.org/stable/c/9862ef9ab0... WEB
https://git.kernel.org/stable/c/9862ef9ab0a116c6dca98842aab7de13a252ae02
git.kernel.org/stable/c/ad92ee8746... WEB
https://git.kernel.org/stable/c/ad92ee87462f9a3061361d392e9dbfe2e5c1c9fb
git.kernel.org/stable/c/b7eef00f08... WEB
https://git.kernel.org/stable/c/b7eef00f08b92b0b9efe8ae0df6d0005e6199323
git.kernel.org/stable/c/c098ff857e... WEB
https://git.kernel.org/stable/c/c098ff857e7ca923539164af5b3c2fe3e8f8afaf
git.kernel.org/stable/c/ceacaa76f2... WEB
https://git.kernel.org/stable/c/ceacaa76f221a6577aba945bb8873c2e640aeba4

Frequently Asked Questions

What is CVE-2026-31418?
CVE-2026-31418 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-31418?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-31418?
CVE-2026-31418 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-2026-31418?
CVE-2026-31418 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-31418?
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 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-vwvf-62c8-j66c",
  "modified" : "2026-10-15T03:35:34Z",
  "published" : "2026-04-13T15:31:42Z",
  "aliases" : [ "CVE-2026-31418" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: ipset: drop logically empty buckets in mtype_del\n\nmtype_del() counts empty slots below n->pos in k, but it only drops the\nbucket when both n->pos and k are zero. This misses buckets whose live\nentries have all been removed while n->pos still points past deleted slots.\n\nTreat a bucket as empty when all positions below n->pos are unused and\nrelease it directly instead of shrinking it further.",
  "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://cert-portal.siemens.com/productcert/html/ssa-019113.html"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"
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    "type" : "WEB",
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  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-04-13T14:16:11Z"
  }
}