CVE-2026-31663: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-v4m9-vrgr-8xm2
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CVSS 7.8
CWE-826 CWE-416
Published
Advisory Summary

CVE-2026-31663 is a HIGH (CVSS 7.8) security vulnerability vulnerability (CWE-826: Premature Release of Resource During Expected Lifetime) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product releases a resource that is still intended to be used by itself or another actor.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-31663 at a Glance

CVE Identifier CVE-2026-31663
GHSA Identifier GHSA-v4m9-vrgr-8xm2
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-826: Premature Release of Resource During Expected Lifetime
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-2026-31663

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-2026-31663, 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 CWE-826: Premature Release of Resource During Expected Lifetime, where the product releases a resource that is still intended to be used by itself or another actor. 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: xfrm: hold dev ref until after transport_finish NF_HOOK After async crypto completes, xfrm_input_resume() calls dev_put() immediately on re-entry before the skb reaches transport_finish. The skb->dev pointer is then used inside NF_HOOK and its okfn, which can race with device teardown. Remove the dev_put from the async resumption entry and instead drop the reference after the NF_HOOK call in transport_finish, using a saved device pointer since NF_HOOK may consume the skb. This covers NF_DROP, NF_QUEUE and NF_STOLEN paths that skip the okfn. For non-transport exits (decaps, gro, drop) and secondary async return points, release the reference inline when async is set.

References

NVD — CVE-2026-31663 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-31663
access.redhat.com/errata/rhsa-2026:67... WEB
https://access.redhat.com/errata/RHSA-2026:67471
access.redhat.com/errata/rhsa-2026:68... WEB
https://access.redhat.com/errata/RHSA-2026:68531
access.redhat.com/errata/rhsa-2026:68... WEB
https://access.redhat.com/errata/RHSA-2026:68532
access.redhat.com/errata/rhsa-2026:68... WEB
https://access.redhat.com/errata/RHSA-2026:68570
Software Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2026-31663
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2461462
git.kernel.org/stable/c/0f451b43c8... WEB
https://git.kernel.org/stable/c/0f451b43c88bf2b9c038b414be580efee42e031b
git.kernel.org/stable/c/1c428b0384... WEB
https://git.kernel.org/stable/c/1c428b03840094410c5fb6a5db30640486bbbfcb
git.kernel.org/stable/c/4236c30b43... WEB
https://git.kernel.org/stable/c/4236c30b437b80f673b9e08c8fae38b8d471ac9e
git.kernel.org/stable/c/5002beda5c... WEB
https://git.kernel.org/stable/c/5002beda5cac69d522dc54da0d5d463ed9c963d2
Software Security Information SECURITY
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-31663.json

Frequently Asked Questions

What is CVE-2026-31663?
CVE-2026-31663 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-826: Premature Release of Resource During Expected Lifetime.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-31663?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-31663?
CVE-2026-31663 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-2026-31663?
CVE-2026-31663 is classified under CWE-826: Premature Release of Resource During Expected Lifetime (The product releases a resource that is still intended to be used by itself or another actor.).
How can I check Maven dependencies for CVE-2026-31663?
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-v4m9-vrgr-8xm2",
  "modified" : "2026-09-18T15:31:23Z",
  "published" : "2026-04-24T15:32:37Z",
  "aliases" : [ "CVE-2026-31663" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: hold dev ref until after transport_finish NF_HOOK\n\nAfter async crypto completes, xfrm_input_resume() calls dev_put()\nimmediately on re-entry before the skb reaches transport_finish.\nThe skb->dev pointer is then used inside NF_HOOK and its okfn,\nwhich can race with device teardown.\n\nRemove the dev_put from the async resumption entry and instead\ndrop the reference after the NF_HOOK call in transport_finish,\nusing a saved device pointer since NF_HOOK may consume the skb.\nThis covers NF_DROP, NF_QUEUE and NF_STOLEN paths that skip\nthe okfn.\n\nFor non-transport exits (decaps, gro, drop) and secondary\nasync return points, release the reference inline when\nasync is set.",
  "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" : [ ],
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  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:67471"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:68531"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/errata/RHSA-2026:68532"
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    "url" : "https://access.redhat.com/errata/RHSA-2026:68570"
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    "type" : "WEB",
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  }, {
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  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-416", "CWE-826" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-04-24T15:16:45Z"
  }
}