CVE-2026-42492: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-2hv5-3qjg-gjqr
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CVSS 7.5
CWE-459
Published
Advisory Summary

CVE-2026-42492 is a HIGH (CVSS 7.5) security vulnerability vulnerability (CWE-459: Incomplete Cleanup) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not properly "clean up" and remove temporary or supporting resources after they have been used.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-42492 at a Glance

CVE Identifier CVE-2026-42492
GHSA Identifier GHSA-2hv5-3qjg-gjqr
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-459: Incomplete Cleanup
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2026-42492

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-2026-42492, 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-459: Incomplete Cleanup, where the product does not properly "clean up" and remove temporary or supporting resources after they have been used. 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

Xenstore, to have an up-to-date picture of the entire system, wants to know of domains appearing and disappearing. To make this more robust, a new XEN_DOMCTL_get_domain_state was introduced. The management of the bitmap underlying that operation is tied into the binding of the VIRQ_DOM_EXC virtual IRQ. Unfortunately an error path there would tear down the bitmap even in cases when it wasn't set up. Unprivileged domains can trigger that error path.

References

NVD — CVE-2026-42492 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-42492
xenbits.xenproject.org/xsa/advisory-496.ht... WEB
https://xenbits.xenproject.org/xsa/advisory-496.html
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/07/28/13
xenbits.xen.org/xsa/advisory-496.ht... WEB
http://xenbits.xen.org/xsa/advisory-496.html

Frequently Asked Questions

What is CVE-2026-42492?
CVE-2026-42492 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-459: Incomplete Cleanup.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-42492?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-42492?
CVE-2026-42492 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-42492?
CVE-2026-42492 is classified under CWE-459: Incomplete Cleanup (The product does not properly "clean up" and remove temporary or supporting resources after they have been used.).
How can I check Maven dependencies for CVE-2026-42492?
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-2hv5-3qjg-gjqr",
  "modified" : "2026-07-28T18:33:02Z",
  "published" : "2026-07-28T15:32:17Z",
  "aliases" : [ "CVE-2026-42492" ],
  "details" : "Xenstore, to have an up-to-date picture of the entire system, wants to\nknow of domains appearing and disappearing.  To make this more robust, a\nnew XEN_DOMCTL_get_domain_state was introduced.  The management of the\nbitmap underlying that operation is tied into the binding of the\nVIRQ_DOM_EXC virtual IRQ.  Unfortunately an error path there would tear\ndown the bitmap even in cases when it wasn't set up.  Unprivileged domains\ncan trigger that error path.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-42492"
  }, {
    "type" : "WEB",
    "url" : "https://xenbits.xenproject.org/xsa/advisory-496.html"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/07/28/13"
  }, {
    "type" : "WEB",
    "url" : "http://xenbits.xen.org/xsa/advisory-496.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-459" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-28T13:18:32Z"
  }
}