CVE-2026-42356: Software Security Vulnerability Vulnerability

LOW
Advisory Identifier: GHSA-rxhx-8qf3-fc8h
Share
CVSS 3.7
CWE-430
Published
Advisory Summary

CVE-2026-42356 is a LOW (CVSS 3.7) security vulnerability vulnerability (CWE-430: Deployment of Wrong Handler) affecting Software libraries in the Maven ecosystem. The weakness occurs when the wrong "handler" is assigned to process an object.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-42356 at a Glance

CVE Identifier CVE-2026-42356
GHSA Identifier GHSA-rxhx-8qf3-fc8h
Severity LOW
CVSS v3.1 Base Score 3.7
CWE Classification CWE-430: Deployment of Wrong Handler
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.7

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

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

How to Fix CVE-2026-42356

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-2026-42356, 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-430: Deployment of Wrong Handler, where the wrong "handler" is assigned to process an object. 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

Deployment of wrong handler vulnerability in Apache HTTP Server allows the target of some internal redirects from CGI programs to also be treated as CGI and executed. The target must already be in a directory enabled for CGI and have no other extension understood by mod_mime. This issue affects Apache HTTP Server: from 2.4.60 through 2.4.68.

References

NVD — CVE-2026-42356 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-42356
Software Security Information SECURITY
https://httpd.apache.org/security/vulnerabilities_24.html
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/10/01/11

Frequently Asked Questions

What is CVE-2026-42356?
CVE-2026-42356 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-430: Deployment of Wrong Handler.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-42356?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-42356?
CVE-2026-42356 has a CVSS v3.1 base score of 3.7 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2026-42356?
CVE-2026-42356 is classified under CWE-430: Deployment of Wrong Handler (The wrong "handler" is assigned to process an object.).
How can I check Maven dependencies for CVE-2026-42356?
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-rxhx-8qf3-fc8h",
  "modified" : "2026-10-01T21:32:49Z",
  "published" : "2026-10-01T18:32:43Z",
  "aliases" : [ "CVE-2026-42356" ],
  "details" : "Deployment of wrong handler vulnerability in Apache HTTP Server allows the target of some internal redirects from CGI programs to also be treated as CGI and executed. The target must already be in a directory enabled for CGI and have no other extension understood by mod_mime.\n\n\n\nThis issue affects Apache HTTP Server: from 2.4.60 through 2.4.68.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-42356"
  }, {
    "type" : "WEB",
    "url" : "https://httpd.apache.org/security/vulnerabilities_24.html"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/10/01/11"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-430" ],
    "severity" : "LOW",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-10-01T16:17:43Z"
  }
}