CVE-2026-43093: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-m2xh-q35x-h5f5
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CVSS 7.8
CWE-787
Published
Advisory Summary

CVE-2026-43093 is a HIGH (CVSS 7.8) security vulnerability vulnerability (CWE-787: Out-of-bounds Write) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product writes data past the end, or before the beginning, of the intended buffer.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-43093 at a Glance

CVE Identifier CVE-2026-43093
GHSA Identifier GHSA-m2xh-q35x-h5f5
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-787: Out-of-bounds Write
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.8

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:H/I:H/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 High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-43093

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-2026-43093, 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-787: Out-of-bounds Write, where the product writes data past the end, or before the beginning, of the intended buffer. 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: xsk: tighten UMEM headroom validation to account for tailroom and min frame The current headroom validation in xdp_umem_reg() could leave us with insufficient space dedicated to even receive minimum-sized ethernet frame. Furthermore if multi-buffer would come to play then skb_shared_info stored at the end of XSK frame would be corrupted. HW typically works with 128-aligned sizes so let us provide this value as bare minimum. Multi-buffer setting is known later in the configuration process so besides accounting for 128 bytes, let us also take care of tailroom space upfront.

References

NVD — CVE-2026-43093 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43093
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-784472.html
git.kernel.org/stable/c/0ec4d3f6e6... WEB
https://git.kernel.org/stable/c/0ec4d3f6e6934deb843b561ae048cd17218e5ad1
git.kernel.org/stable/c/1a6051cd7e... WEB
https://git.kernel.org/stable/c/1a6051cd7e3e4c54ff3854a43b638b9292af5e67
git.kernel.org/stable/c/5f123bc278... WEB
https://git.kernel.org/stable/c/5f123bc278bf4e3283d8606321bebbfd299f4384
git.kernel.org/stable/c/6523bc1b40... WEB
https://git.kernel.org/stable/c/6523bc1b40e69301f24c14338b762af4739d6d39
git.kernel.org/stable/c/8769708add... WEB
https://git.kernel.org/stable/c/8769708add9eadeea8041a9761771bb715a87104
git.kernel.org/stable/c/9ea6ba4f31... WEB
https://git.kernel.org/stable/c/9ea6ba4f3195dcba6e8b3e7b2e748593b7cafb12
git.kernel.org/stable/c/a03975beb9... WEB
https://git.kernel.org/stable/c/a03975beb9f6af0d8ac051e30b2abeabe618414f
git.kernel.org/stable/c/a315e022a7... WEB
https://git.kernel.org/stable/c/a315e022a72d95ef5f1d4e58e903cb492b0ad931

Frequently Asked Questions

What is CVE-2026-43093?
CVE-2026-43093 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-787: Out-of-bounds Write.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-43093?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-43093?
CVE-2026-43093 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-43093?
CVE-2026-43093 is classified under CWE-787: Out-of-bounds Write (The product writes data past the end, or before the beginning, of the intended buffer.).
How can I check Maven dependencies for CVE-2026-43093?
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-m2xh-q35x-h5f5",
  "modified" : "2026-10-15T03:35:50Z",
  "published" : "2026-05-06T12:30:27Z",
  "aliases" : [ "CVE-2026-43093" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: tighten UMEM headroom validation to account for tailroom and min frame\n\nThe current headroom validation in xdp_umem_reg() could leave us with\ninsufficient space dedicated to even receive minimum-sized ethernet\nframe. Furthermore if multi-buffer would come to play then\nskb_shared_info stored at the end of XSK frame would be corrupted.\n\nHW typically works with 128-aligned sizes so let us provide this value\nas bare minimum.\n\nMulti-buffer setting is known later in the configuration process so\nbesides accounting for 128 bytes, let us also take care of tailroom space\nupfront.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
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  "database_specific" : {
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    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-05-06T10:16:22Z"
  }
}