CVE-2026-46256: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-44f9-rxj6-p8rg
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CVSS 5.5
CWE-667
Published
Advisory Summary

CVE-2026-46256 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-667: Improper Locking) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-46256 at a Glance

CVE Identifier CVE-2026-46256
GHSA Identifier GHSA-44f9-rxj6-p8rg
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-667: Improper Locking
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.5

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

How to Fix CVE-2026-46256

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-2026-46256, 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-667: Improper Locking, where the product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors. 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: NFS/localio: prevent direct reclaim recursion into NFS via nfs_writepages LOCALIO is an NFS loopback mount optimization that avoids using the network for READ, WRITE and COMMIT if the NFS client and server are determined to be on the same system. But because LOCALIO is still fundamentally "just NFS loopback mount" it is susceptible to recursion deadlock via direct reclaim, e.g.: NFS LOCALIO down to XFS and then back into NFS via nfs_writepages. Fix LOCALIO's potential for direct reclaim deadlock by ensuring that all its page cache allocations are done from GFP_NOFS context. Thanks to Ben Coddington for pointing out commit ad22c7a043c2 ("xfs: prevent stack overflows from page cache allocation").

References

NVD — CVE-2026-46256 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46256
git.kernel.org/stable/c/67435d2d8a... WEB
https://git.kernel.org/stable/c/67435d2d8a33a75f9647724952cb1b18279d2e95
git.kernel.org/stable/c/6a5de0c4fc... WEB
https://git.kernel.org/stable/c/6a5de0c4fc0f217eea945d3d72c34ee30d72cbc9
git.kernel.org/stable/c/ae26a4cf2b... WEB
https://git.kernel.org/stable/c/ae26a4cf2baf0a44c538dc093504d1994b02dade

Frequently Asked Questions

What is CVE-2026-46256?
CVE-2026-46256 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-667: Improper Locking.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-46256?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-46256?
CVE-2026-46256 has a CVSS v3.1 base score of 5.5 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with CVE-2026-46256?
CVE-2026-46256 is classified under CWE-667: Improper Locking (The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.).
How can I check Maven dependencies for CVE-2026-46256?
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-44f9-rxj6-p8rg",
  "modified" : "2026-06-09T21:32:21Z",
  "published" : "2026-06-03T18:33:12Z",
  "aliases" : [ "CVE-2026-46256" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nNFS/localio: prevent direct reclaim recursion into NFS via nfs_writepages\n\nLOCALIO is an NFS loopback mount optimization that avoids using the\nnetwork for READ, WRITE and COMMIT if the NFS client and server are\ndetermined to be on the same system. But because LOCALIO is still\nfundamentally \"just NFS loopback mount\" it is susceptible to recursion\ndeadlock via direct reclaim, e.g.: NFS LOCALIO down to XFS and then\nback into NFS via nfs_writepages.\n\nFix LOCALIO's potential for direct reclaim deadlock by ensuring that\nall its page cache allocations are done from GFP_NOFS context.\n\nThanks to Ben Coddington for pointing out commit ad22c7a043c2 (\"xfs:\nprevent stack overflows from page cache allocation\").",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-46256"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/67435d2d8a33a75f9647724952cb1b18279d2e95"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6a5de0c4fc0f217eea945d3d72c34ee30d72cbc9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ae26a4cf2baf0a44c538dc093504d1994b02dade"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-667" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-06-03T18:16:26Z"
  }
}