CVE-2026-19492: Software Security Vulnerability Vulnerability

LOW
Advisory Identifier: GHSA-q2mh-hq2m-m2mm
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CVSS 3.2
CWE-457
Published
Advisory Summary

CVE-2026-19492 is a LOW (CVSS 3.2) security vulnerability vulnerability (CWE-457: Use of Uninitialized Variable) affecting Software libraries in the Maven ecosystem. The weakness occurs when the code uses a variable that has not been initialized, leading to unpredictable or unintended results.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-19492 at a Glance

CVE Identifier CVE-2026-19492
GHSA Identifier GHSA-q2mh-hq2m-m2mm
Severity LOW
CVSS v3.1 Base Score 3.2
CWE Classification CWE-457: Use of Uninitialized Variable
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.2

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

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

How to Fix CVE-2026-19492

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-2026-19492, 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-457: Use of Uninitialized Variable, where the code uses a variable that has not been initialized, leading to unpredictable or unintended results. 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

IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in a hypervisor call interface. An attacker with root access to a guest partition can read a limited amount of hypervisor memory, potentially exposing sensitive data belonging to the hypervisor or other guest partitions hosted on the same system, resulting in a confidentiality impact. The attacker has no control over which memory contents are returned. This vulnerability is of particular concern in multi-tenant environments where guests may run arbitrary OS images.

References

NVD — CVE-2026-19492 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19492
www.ibm.com/support/pages/node/... WEB
https://www.ibm.com/support/pages/node/7289137

Frequently Asked Questions

What is CVE-2026-19492?
CVE-2026-19492 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-457: Use of Uninitialized Variable.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-19492?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-19492?
CVE-2026-19492 has a CVSS v3.1 base score of 3.2 (LOW) with vector string CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N.
What CWE is associated with CVE-2026-19492?
CVE-2026-19492 is classified under CWE-457: Use of Uninitialized Variable (The code uses a variable that has not been initialized, leading to unpredictable or unintended results.).
How can I check Maven dependencies for CVE-2026-19492?
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-q2mh-hq2m-m2mm",
  "modified" : "2026-09-24T15:31:34Z",
  "published" : "2026-09-24T15:31:34Z",
  "aliases" : [ "CVE-2026-19492" ],
  "details" : "IBM PowerVM Hypervisor FW1120.00 through FW1120.01, FW1110.00 through FW1110.31, and FW1060.00 through FW1060.81 is affected by a vulnerability in a hypervisor call interface. An attacker with root access to a guest partition can read a limited amount of hypervisor memory, potentially exposing sensitive data belonging to the hypervisor or other guest partitions hosted on the same system, resulting in a confidentiality impact. The attacker has no control over which memory contents are returned. This vulnerability is of particular concern in multi-tenant environments where guests may run arbitrary OS images.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-19492"
  }, {
    "type" : "WEB",
    "url" : "https://www.ibm.com/support/pages/node/7289137"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-457" ],
    "severity" : "LOW",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-24T15:17:20Z"
  }
}