CVE-2026-89705: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-pvqx-hghh-c66m
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CVSS 7.1
Published
Advisory Summary

CVE-2026-89705 is a HIGH (CVSS 7.1) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-89705 at a Glance

CVE Identifier CVE-2026-89705
GHSA Identifier GHSA-pvqx-hghh-c66m
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.1

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

How to Fix CVE-2026-89705

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-2026-89705, 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: restore rq_status_counter to even on all nfsd_dispatch() exit paths nfsd_dispatch() sets rq_status_counter to an odd value once a request has been decoded, and back to an even value once it has been fully processed, forming a seq-lock like protocol with the lockless reader in nfsd_nl_rpc_status_get_dumpit(). Only the fully successful path restored the counter to even. The cache-hit (RC_REPLY), drop (RC_DROPIT / RQ_DROPME) and encode-error paths all return after the odd-valued store without ever bringing the counter back to even. Once one of those paths is taken, rq_status_counter is left odd: the next request's decode ORs in 1 (still odd) and only a subsequent successful encode restores even. While stuck odd, the dumpit reader treats the rqstp fields as stable and its retry check compares against the same unchanging odd value, so it never detects concurrent mutation. This exposes actively mutating fields (e.g. args->ops / args->opcnt during compound decode and release) to the lockless reader, which can read past the end of the 8-element inline ops array. Add a helper that advances the counter to the next even value and call it on every return path that follows the odd-valued store. The decode-error path is left untouched as it is reached before the counter is set odd.

References

NVD — CVE-2026-89705 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89705
git.kernel.org/stable/c/b08c30f08d... WEB
https://git.kernel.org/stable/c/b08c30f08d57f30699d36809d92f0b683dca261f
git.kernel.org/stable/c/df5500ab85... WEB
https://git.kernel.org/stable/c/df5500ab85df661d9e4439e4c456787181fbd5ff
git.kernel.org/stable/c/f6045886fe... WEB
https://git.kernel.org/stable/c/f6045886fe3f14f269f683d64021b004a50d0efa

Frequently Asked Questions

What is CVE-2026-89705?
CVE-2026-89705 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-2026-89705?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89705?
CVE-2026-89705 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
What CWE is associated with CVE-2026-89705?
CVE-2026-89705 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89705?
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-pvqx-hghh-c66m",
  "modified" : "2026-10-15T12:30:46Z",
  "published" : "2026-09-11T21:31:37Z",
  "aliases" : [ "CVE-2026-89705" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: restore rq_status_counter to even on all nfsd_dispatch() exit paths\n\nnfsd_dispatch() sets rq_status_counter to an odd value once a request has\nbeen decoded, and back to an even value once it has been fully processed,\nforming a seq-lock like protocol with the lockless reader in\nnfsd_nl_rpc_status_get_dumpit().\n\nOnly the fully successful path restored the counter to even. The cache-hit\n(RC_REPLY), drop (RC_DROPIT / RQ_DROPME) and encode-error paths all return\nafter the odd-valued store without ever bringing the counter back to even.\nOnce one of those paths is taken, rq_status_counter is left odd: the next\nrequest's decode ORs in 1 (still odd) and only a subsequent successful\nencode restores even. While stuck odd, the dumpit reader treats the rqstp\nfields as stable and its retry check compares against the same unchanging\nodd value, so it never detects concurrent mutation. This exposes actively\nmutating fields (e.g. args->ops / args->opcnt during compound decode and\nrelease) to the lockless reader, which can read past the end of the\n8-element inline ops array.\n\nAdd a helper that advances the counter to the next even value and call it\non every return path that follows the odd-valued store. The decode-error\npath is left untouched as it is reached before the counter is set odd.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-89705"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b08c30f08d57f30699d36809d92f0b683dca261f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/df5500ab85df661d9e4439e4c456787181fbd5ff"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f6045886fe3f14f269f683d64021b004a50d0efa"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:57Z"
  }
}