CVE-2026-89707: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-qv85-292c-84hh
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CVSS 7.5
Published
Advisory Summary

CVE-2026-89707 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-2026-89707 at a Glance

CVE Identifier CVE-2026-89707
GHSA Identifier GHSA-qv85-292c-84hh
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-2026-89707

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-2026-89707, 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: nfsd: release path refs on follow_down() error nfsd_cross_mnt() initializes a local struct path with mntget() and dget() before calling follow_down(). On a negative return the error arm jumps to out without releasing those references: err = follow_down(&path, follow_flags); if (err < 0) goto out; follow_down() never drops the caller's entry-time refs on any error sub-case; for example a pre-cross d_manage() failure leaves path untouched, so the mntget()/dget() taken on entry survive the call. Every other early-exit arm in nfsd_cross_mnt() (other-namespace return, IS_ERR(exp2), and the success tail after the swap) already calls path_put(&path); the err < 0 arm is the lone omission. The leak inflates mnt_count and d_count on each failed cross-mount, blocking umount and pinning dentries against the shrinker, and is reachable by any authenticated NFS client through nfsd_lookup_dentry or the NFSv4 READDIR encode path. Fix by calling path_put(&path) before the goto out in the err < 0 arm so the entry-time refs are released on all follow_down() error returns.

References

NVD — CVE-2026-89707 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89707
git.kernel.org/stable/c/085cfde7c2... WEB
https://git.kernel.org/stable/c/085cfde7c2186acaad103f02d2c25435ad5224e9
git.kernel.org/stable/c/194316df81... WEB
https://git.kernel.org/stable/c/194316df81263519156ebe714c4a286bee00e5be
git.kernel.org/stable/c/2bc4343308... WEB
https://git.kernel.org/stable/c/2bc4343308d85ee4e0dd3877b384306c96f114c2
git.kernel.org/stable/c/467d56fd3f... WEB
https://git.kernel.org/stable/c/467d56fd3ff57447a790c6dc3ede2d02a947d224
git.kernel.org/stable/c/6cba08dc19... WEB
https://git.kernel.org/stable/c/6cba08dc1922140d260cfeb30bbda4ee1bf869d8

Frequently Asked Questions

What is CVE-2026-89707?
CVE-2026-89707 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-2026-89707?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89707?
CVE-2026-89707 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-2026-89707?
CVE-2026-89707 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89707?
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-qv85-292c-84hh",
  "modified" : "2026-09-14T15:32:34Z",
  "published" : "2026-09-11T21:31:37Z",
  "aliases" : [ "CVE-2026-89707" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: release path refs on follow_down() error\n\nnfsd_cross_mnt() initializes a local struct path with mntget() and\ndget() before calling follow_down(). On a negative return the error\narm jumps to out without releasing those references:\n\n    err = follow_down(&path, follow_flags);\n    if (err < 0)\n            goto out;\n\nfollow_down() never drops the caller's entry-time refs on any error\nsub-case; for example a pre-cross d_manage() failure leaves path\nuntouched, so the mntget()/dget() taken on entry survive the call.\n\nEvery other early-exit arm in nfsd_cross_mnt() (other-namespace\nreturn, IS_ERR(exp2), and the success tail after the swap) already\ncalls path_put(&path); the err < 0 arm is the lone omission. The\nleak inflates mnt_count and d_count on each failed cross-mount,\nblocking umount and pinning dentries against the shrinker, and is\nreachable by any authenticated NFS client through nfsd_lookup_dentry\nor the NFSv4 READDIR encode path.\n\nFix by calling path_put(&path) before the goto out in the err < 0\narm so the entry-time refs are released on all follow_down() error\nreturns.",
  "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-2026-89707"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/085cfde7c2186acaad103f02d2c25435ad5224e9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/194316df81263519156ebe714c4a286bee00e5be"
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    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2bc4343308d85ee4e0dd3877b384306c96f114c2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/467d56fd3ff57447a790c6dc3ede2d02a947d224"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6cba08dc1922140d260cfeb30bbda4ee1bf869d8"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:58Z"
  }
}