CVE-2026-89911: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-jq85-p2x4-26cc
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CVSS 7.9
Published
Advisory Summary

CVE-2026-89911 is a HIGH (CVSS 7.9) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89911 at a Glance

CVE Identifier CVE-2026-89911
GHSA Identifier GHSA-jq85-p2x4-26cc
Severity HIGH
CVSS v3.1 Base Score 7.9
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.9

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:C/C:L/I:L/A:H).

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

How to Fix CVE-2026-89911

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-2026-89911, 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: arm64: Correctly cap TLBI Range to the architural limit TLB Invalidation by Range has a fairly powerful way of encoding pretty large ranges in a small number of bits. This range can be based on an arbitrary VA, which means it is pretty easy for a guest to generate an overflow should the hypervisor be naive enough to add the range to the base... Make sure the range is capped to the limit dictated by the address bit that determines the VA range. For an IPA invalidation, this is further corrected down the line to ignore the upper range.

References

NVD — CVE-2026-89911 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89911
git.kernel.org/stable/c/2de38f0448... WEB
https://git.kernel.org/stable/c/2de38f0448b45d27eba984fc0d9edb7a138972c2
git.kernel.org/stable/c/566b1f08d9... WEB
https://git.kernel.org/stable/c/566b1f08d983615f731cc693f2ad59db302c6b57
git.kernel.org/stable/c/69a5982881... WEB
https://git.kernel.org/stable/c/69a598288195947a1662b53de702eb6976af96b7

Frequently Asked Questions

What is CVE-2026-89911?
CVE-2026-89911 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-2026-89911?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89911?
CVE-2026-89911 has a CVSS v3.1 base score of 7.9 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H.
What CWE is associated with CVE-2026-89911?
CVE-2026-89911 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89911?
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-jq85-p2x4-26cc",
  "modified" : "2026-09-16T15:31:01Z",
  "published" : "2026-09-16T12:30:41Z",
  "aliases" : [ "CVE-2026-89911" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nKVM: arm64: Correctly cap TLBI Range to the architural limit\n\nTLB Invalidation by Range has a fairly powerful way of encoding pretty\nlarge ranges in a small number of bits. This range can be based on an\narbitrary VA, which means it is pretty easy for a guest to generate an\noverflow should the hypervisor be naive enough to add the range to the\nbase...\n\nMake sure the range is capped to the limit dictated by the address bit\nthat determines the VA range. For an IPA invalidation, this is further\ncorrected down the line to ignore the upper range.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89911"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2de38f0448b45d27eba984fc0d9edb7a138972c2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/566b1f08d983615f731cc693f2ad59db302c6b57"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/69a598288195947a1662b53de702eb6976af96b7"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T11:17:00Z"
  }
}