CVE-2026-89919: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-xrcv-f2mv-23j2
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CVSS 7.8
Published
Advisory Summary

CVE-2026-89919 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89919 at a Glance

CVE Identifier CVE-2026-89919
GHSA Identifier GHSA-xrcv-f2mv-23j2
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
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-2026-89919

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-2026-89919, 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: KVM: s390: keyop: use mmu_lock to read gmap->asce Every other dat_* consumer in this file (kvm_s390_get_skeys, set_skeys, get_cmma_bits, set_cmma_bits, MEM_CLR_CMMA, kvm_s390_fixup_prefix, kvm_test_age_gfn, kvm_age_gfn) reads kvm->arch.gmap->asce *inside* the mmu_lock read-side. keyop is the only outlier. gmap->asce is mutated under write_lock(mmu_lock) by gmap_set_limit() and keyop might use a stale asce value for walking as KVM_S390_KEYOP and KVM_S390_VM_MEM_LIMIT_SIZE can run concurrently. This can result in memory corruption.

References

NVD — CVE-2026-89919 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89919
git.kernel.org/stable/c/ae452b990e... WEB
https://git.kernel.org/stable/c/ae452b990e0544425f77045351c56e77158858e7
git.kernel.org/stable/c/da07a751ef... WEB
https://git.kernel.org/stable/c/da07a751efa4583385f9f0f47113549fe8871242

Frequently Asked Questions

What is CVE-2026-89919?
CVE-2026-89919 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-2026-89919?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89919?
CVE-2026-89919 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-2026-89919?
CVE-2026-89919 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89919?
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-xrcv-f2mv-23j2",
  "modified" : "2026-09-16T15:31:02Z",
  "published" : "2026-09-16T12:30:41Z",
  "aliases" : [ "CVE-2026-89919" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: s390: keyop: use mmu_lock to read gmap->asce\n\nEvery other dat_* consumer in this file (kvm_s390_get_skeys,\nset_skeys, get_cmma_bits, set_cmma_bits, MEM_CLR_CMMA,\nkvm_s390_fixup_prefix, kvm_test_age_gfn, kvm_age_gfn) reads\nkvm->arch.gmap->asce *inside* the mmu_lock read-side. keyop is the only\noutlier.\n\ngmap->asce is mutated under write_lock(mmu_lock) by gmap_set_limit()\nand keyop might use a stale asce value for walking as KVM_S390_KEYOP\nand KVM_S390_VM_MEM_LIMIT_SIZE can run concurrently. This can result\nin memory corruption.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89919"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ae452b990e0544425f77045351c56e77158858e7"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/da07a751efa4583385f9f0f47113549fe8871242"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T11:17:00Z"
  }
}