CVE-2026-89643: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-qh9h-fg7c-vgxw
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CVSS 9.8
Published
Advisory Summary

CVE-2026-89643 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89643 at a Glance

CVE Identifier CVE-2026-89643
GHSA Identifier GHSA-qh9h-fg7c-vgxw
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2026-89643

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-2026-89643, 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: audit: avoid dropping live tree ref on fsnotify rule autoremove audit_del_rule() is used for both netlink deletion templates and internal fsnotify autoremove. The former passes a parsed template which owns a temporary tree reference; the latter passes the installed entry itself. The unconditional audit_put_tree() at the end of audit_del_rule() assumes the template case. For mixed AUDIT_DIR plus AUDIT_EXE rules, an fsnotify autoremove event therefore drops the installed rule's live tree reference. Repeating this across rules sharing the same tree can free the tree while another rule still references it, and a later autoremove dereferences the freed pathname while comparing rules. Move the temporary-tree put to audit_rule_change(), the caller that owns deletion templates. Keep it in the AUDIT_DEL_RULE cleanup so both successful deletion and -ENOENT still release the parser-owned tree. [PM: dropped unnecessary comment for line length reasons]

References

NVD — CVE-2026-89643 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89643
git.kernel.org/stable/c/01b0ec8c39... WEB
https://git.kernel.org/stable/c/01b0ec8c397be65ff710777c97017ca1de56ef8e
git.kernel.org/stable/c/583cf579b3... WEB
https://git.kernel.org/stable/c/583cf579b32d99e3fe4e9c8ecc4d852e3708fbec
git.kernel.org/stable/c/636a99bab3... WEB
https://git.kernel.org/stable/c/636a99bab36ba27515363d325866c0273ac83b3e
git.kernel.org/stable/c/695c85dc34... WEB
https://git.kernel.org/stable/c/695c85dc345a4e0292739f004c261bedef3f27e6
git.kernel.org/stable/c/783f0f0974... WEB
https://git.kernel.org/stable/c/783f0f0974c156aca630f4ffff248671082a098d
git.kernel.org/stable/c/9cac21f8eb... WEB
https://git.kernel.org/stable/c/9cac21f8eb82675ed19fb955b8bbb9dd14cc3d58
git.kernel.org/stable/c/b322cc7adc... WEB
https://git.kernel.org/stable/c/b322cc7adcd2e6ec1594d187533a126506ab545c
git.kernel.org/stable/c/cf37b61b54... WEB
https://git.kernel.org/stable/c/cf37b61b5420fd4600fe78cf8c24da6e4d9bfe28

Frequently Asked Questions

What is CVE-2026-89643?
CVE-2026-89643 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-2026-89643?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89643?
CVE-2026-89643 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-89643?
CVE-2026-89643 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89643?
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-qh9h-fg7c-vgxw",
  "modified" : "2026-09-14T15:32:32Z",
  "published" : "2026-09-11T21:31:35Z",
  "aliases" : [ "CVE-2026-89643" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\naudit: avoid dropping live tree ref on fsnotify rule autoremove\n\naudit_del_rule() is used for both netlink deletion templates and internal\nfsnotify autoremove.  The former passes a parsed template which owns a\ntemporary tree reference; the latter passes the installed entry itself.\n\nThe unconditional audit_put_tree() at the end of audit_del_rule() assumes\nthe template case.  For mixed AUDIT_DIR plus AUDIT_EXE rules, an fsnotify\nautoremove event therefore drops the installed rule's live tree reference.\nRepeating this across rules sharing the same tree can free the tree while\nanother rule still references it, and a later autoremove dereferences the\nfreed pathname while comparing rules.\n\nMove the temporary-tree put to audit_rule_change(), the caller that owns\ndeletion templates.  Keep it in the AUDIT_DEL_RULE cleanup so both\nsuccessful deletion and -ENOENT still release the parser-owned tree.\n\n[PM: dropped unnecessary comment for line length reasons]",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89643"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/01b0ec8c397be65ff710777c97017ca1de56ef8e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/583cf579b32d99e3fe4e9c8ecc4d852e3708fbec"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/636a99bab36ba27515363d325866c0273ac83b3e"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/695c85dc345a4e0292739f004c261bedef3f27e6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/783f0f0974c156aca630f4ffff248671082a098d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9cac21f8eb82675ed19fb955b8bbb9dd14cc3d58"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b322cc7adcd2e6ec1594d187533a126506ab545c"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/cf37b61b5420fd4600fe78cf8c24da6e4d9bfe28"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:50Z"
  }
}