CVE-2026-89893: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-8263-vr49-mgcg
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CVSS 7.8
Published
Advisory Summary

CVE-2026-89893 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-2026-89893 at a Glance

CVE Identifier CVE-2026-89893
GHSA Identifier GHSA-8263-vr49-mgcg
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-2026-89893

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-2026-89893, 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: media: cx23885: cancel NetUP CI work before teardown netup_ci_exit() frees a netup_ci_state while its work item, netup_read_ci_status(), may still be pending or running on the system workqueue. The worker obtains the state with container_of() and dereferences it, so it must not outlive the state. netup_ci_init() queues the initial status read, and CI GPIO interrupts subsequently queue the same work from netup_ci_slot_status(). During remove, cx23885_finidev() calls free_irq() before the CI device is unregistered. free_irq() prevents further IRQ handlers from running, but does not drain work queued previously, so the worker can run after netup_ci_exit() frees the state. Call cancel_work_sync() before dvb_ca_en50221_release() and kfree(). This issue was found by an in-house static analysis tool.

References

NVD — CVE-2026-89893 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89893
git.kernel.org/stable/c/140ecbcbf9... WEB
https://git.kernel.org/stable/c/140ecbcbf978fbe60f83f8d4f8b1199029a5c763
git.kernel.org/stable/c/4e143d662c... WEB
https://git.kernel.org/stable/c/4e143d662ca94888b494b2427fc9e34494eb933a
git.kernel.org/stable/c/5deec890ec... WEB
https://git.kernel.org/stable/c/5deec890ecfa04d21cfa9bb9a2fe5e9dc98db5c5
git.kernel.org/stable/c/99cd62b9b1... WEB
https://git.kernel.org/stable/c/99cd62b9b1c818d6d01a87be9a8e5796314150a2
git.kernel.org/stable/c/aaf76794b8... WEB
https://git.kernel.org/stable/c/aaf76794b870b0f391eff339252a2e2e22f33a4a
git.kernel.org/stable/c/bf3f49273d... WEB
https://git.kernel.org/stable/c/bf3f49273d5bf6acbdad18ff44c01ffcf7a7a146
git.kernel.org/stable/c/ec82b0cf7f... WEB
https://git.kernel.org/stable/c/ec82b0cf7f75fd95802592dcc9560fc7f529bba4
git.kernel.org/stable/c/f7ff5adb63... WEB
https://git.kernel.org/stable/c/f7ff5adb63c1b277565afa54ccc0924d841b4a52

Frequently Asked Questions

What is CVE-2026-89893?
CVE-2026-89893 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-2026-89893?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89893?
CVE-2026-89893 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-2026-89893?
CVE-2026-89893 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89893?
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-8263-vr49-mgcg",
  "modified" : "2026-09-16T15:31:00Z",
  "published" : "2026-09-16T12:30:40Z",
  "aliases" : [ "CVE-2026-89893" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cx23885: cancel NetUP CI work before teardown\n\nnetup_ci_exit() frees a netup_ci_state while its work item,\nnetup_read_ci_status(), may still be pending or running on the system\nworkqueue. The worker obtains the state with container_of() and\ndereferences it, so it must not outlive the state.\n\nnetup_ci_init() queues the initial status read, and CI GPIO interrupts\nsubsequently queue the same work from netup_ci_slot_status(). During\nremove, cx23885_finidev() calls free_irq() before the CI device is\nunregistered. free_irq() prevents further IRQ handlers from running,\nbut does not drain work queued previously, so the worker can run after\nnetup_ci_exit() frees the state.\n\nCall cancel_work_sync() before dvb_ca_en50221_release() and kfree().\n\nThis issue was found by an in-house static analysis tool.",
  "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-2026-89893"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/140ecbcbf978fbe60f83f8d4f8b1199029a5c763"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/4e143d662ca94888b494b2427fc9e34494eb933a"
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    "type" : "WEB",
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    "url" : "https://git.kernel.org/stable/c/ec82b0cf7f75fd95802592dcc9560fc7f529bba4"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f7ff5adb63c1b277565afa54ccc0924d841b4a52"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T11:16:58Z"
  }
}