CVE-2026-89549: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-j6w6-qx29-46gg
Share
CVSS 7.5
Published
Advisory Summary

CVE-2026-89549 is a HIGH (CVSS 7.5) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89549 at a Glance

CVE Identifier CVE-2026-89549
GHSA Identifier GHSA-j6w6-qx29-46gg
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:N/I:N/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 None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-89549

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-2026-89549, 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: sunrpc: route to a populated pool in svc_pool_for_cpu() svc_set_num_threads() spreads the requested threads evenly across the service's pools (base = nrservs / sv_nrpools). When a service runs fewer threads than it has pools -- e.g. an nfsd configured with fewer threads than the host has NUMA nodes while running in "pernode" or "percpu" mode -- the trailing pools are left with no threads at all. svc_xprt_enqueue() selects a pool from the CPU servicing the transport, queues the transport on that pool's sp_xprts, and only wakes a thread from the same pool. Each thread services exclusively its own pool, so a transport that lands on a threadless pool is enqueued on sp_xprts and never picked up: the connection hangs indefinitely. Have svc_pool_for_cpu() skip pools that currently have no threads, falling back to the next populated pool. This trades NUMA locality for a guarantee that the work is actually serviced. sp_nrthreads is only updated under the service mutex; the lockless read here is a best-effort routing hint, so annotate it with data_race().

References

NVD — CVE-2026-89549 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89549
git.kernel.org/stable/c/011479cf9a... WEB
https://git.kernel.org/stable/c/011479cf9a7657d4a3e7cc42a784ac63df594170
git.kernel.org/stable/c/6f66d38e2a... WEB
https://git.kernel.org/stable/c/6f66d38e2a6c78d48723ea17ad86135ec80ca24b
git.kernel.org/stable/c/8f766d2d0b... WEB
https://git.kernel.org/stable/c/8f766d2d0b4dabf54f8b35812df2b4f481d13316
git.kernel.org/stable/c/9accc25e5a... WEB
https://git.kernel.org/stable/c/9accc25e5af0bac8479f6054e674b2c593c45281
git.kernel.org/stable/c/9d04d64ad1... WEB
https://git.kernel.org/stable/c/9d04d64ad192439835ed9884d767353061c3ed6f
git.kernel.org/stable/c/d79d7b9e8a... WEB
https://git.kernel.org/stable/c/d79d7b9e8acbb53e2d60f6b24afc13e2f15e691f
git.kernel.org/stable/c/edb20e8c03... WEB
https://git.kernel.org/stable/c/edb20e8c03aebacb409968c99d046f509c6c485a
git.kernel.org/stable/c/f6310491c4... WEB
https://git.kernel.org/stable/c/f6310491c4cdb88af73aa551ec9df1f10a90c709

Frequently Asked Questions

What is CVE-2026-89549?
CVE-2026-89549 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-2026-89549?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89549?
CVE-2026-89549 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-89549?
CVE-2026-89549 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89549?
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-j6w6-qx29-46gg",
  "modified" : "2026-09-14T15:32:28Z",
  "published" : "2026-09-11T21:31:31Z",
  "aliases" : [ "CVE-2026-89549" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nsunrpc: route to a populated pool in svc_pool_for_cpu()\n\nsvc_set_num_threads() spreads the requested threads evenly across the\nservice's pools (base = nrservs / sv_nrpools).  When a service runs\nfewer threads than it has pools -- e.g. an nfsd configured with fewer\nthreads than the host has NUMA nodes while running in \"pernode\" or\n\"percpu\" mode -- the trailing pools are left with no threads at all.\n\nsvc_xprt_enqueue() selects a pool from the CPU servicing the transport,\nqueues the transport on that pool's sp_xprts, and only wakes a thread\nfrom the same pool.  Each thread services exclusively its own pool, so a\ntransport that lands on a threadless pool is enqueued on sp_xprts and\nnever picked up: the connection hangs indefinitely.\n\nHave svc_pool_for_cpu() skip pools that currently have no threads,\nfalling back to the next populated pool.  This trades NUMA locality for\na guarantee that the work is actually serviced.  sp_nrthreads is only\nupdated under the service mutex; the lockless read here is a best-effort\nrouting hint, so annotate it with data_race().",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89549"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/011479cf9a7657d4a3e7cc42a784ac63df594170"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6f66d38e2a6c78d48723ea17ad86135ec80ca24b"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8f766d2d0b4dabf54f8b35812df2b4f481d13316"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9accc25e5af0bac8479f6054e674b2c593c45281"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/9d04d64ad192439835ed9884d767353061c3ed6f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d79d7b9e8acbb53e2d60f6b24afc13e2f15e691f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/edb20e8c03aebacb409968c99d046f509c6c485a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f6310491c4cdb88af73aa551ec9df1f10a90c709"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:38Z"
  }
}