CVE-2026-23066: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-rx25-rppp-x99w
Share
CVSS 5.5
CWE-362 CWE-674
Published
Advisory Summary

CVE-2026-23066 is a MODERATE (CVSS 5.5) security vulnerability vulnerability (CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-23066 at a Glance

CVE Identifier CVE-2026-23066
GHSA Identifier GHSA-rx25-rppp-x99w
Severity MODERATE
CVSS v3.1 Base Score 5.5
CWE Classification CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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-2026-23066

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-2026-23066, 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-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition'), where the product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently. 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: rxrpc: Fix recvmsg() unconditional requeue If rxrpc_recvmsg() fails because MSG_DONTWAIT was specified but the call at the front of the recvmsg queue already has its mutex locked, it requeues the call - whether or not the call is already queued. The call may be on the queue because MSG_PEEK was also passed and so the call was not dequeued or because the I/O thread requeued it. The unconditional requeue may then corrupt the recvmsg queue, leading to things like UAFs or refcount underruns. Fix this by only requeuing the call if it isn't already on the queue - and moving it to the front if it is already queued. If we don't queue it, we have to put the ref we obtained by dequeuing it. Also, MSG_PEEK doesn't dequeue the call so shouldn't call rxrpc_notify_socket() for the call if we didn't use up all the data on the queue, so fix that also.

References

NVD — CVE-2026-23066 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23066
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-784472.html
git.kernel.org/stable/c/0464bf7559... WEB
https://git.kernel.org/stable/c/0464bf75590da75b8413c3e758c04647b4cdb3c6
git.kernel.org/stable/c/2c28769a51... WEB
https://git.kernel.org/stable/c/2c28769a51deb6022d7fbd499987e237a01dd63a
git.kernel.org/stable/c/8fd3b5e297... WEB
https://git.kernel.org/stable/c/8fd3b5e297854a4da0f273169baf4b1b7b257b97
git.kernel.org/stable/c/9301144250... WEB
https://git.kernel.org/stable/c/930114425065f7ace6e0c0630fab4af75e059ea8
git.kernel.org/stable/c/c198628f3f... WEB
https://git.kernel.org/stable/c/c198628f3fca5c874d93874c233014d336e09f64
git.kernel.org/stable/c/c6cebcb4e0... WEB
https://git.kernel.org/stable/c/c6cebcb4e0b3140ec2ace45c020a9049527385d1
git.kernel.org/stable/c/cf969bddd6... WEB
https://git.kernel.org/stable/c/cf969bddd6e69c5777fa89dc88402204e72f312a

Frequently Asked Questions

What is CVE-2026-23066?
CVE-2026-23066 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition').
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-23066?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-23066?
CVE-2026-23066 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-2026-23066?
CVE-2026-23066 is classified under CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') (The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.).
How can I check Maven dependencies for CVE-2026-23066?
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 
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  "id" : "GHSA-rx25-rppp-x99w",
  "modified" : "2026-10-15T03:35:13Z",
  "published" : "2026-02-04T18:30:43Z",
  "aliases" : [ "CVE-2026-23066" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nrxrpc: Fix recvmsg() unconditional requeue\n\nIf rxrpc_recvmsg() fails because MSG_DONTWAIT was specified but the call at\nthe front of the recvmsg queue already has its mutex locked, it requeues\nthe call - whether or not the call is already queued.  The call may be on\nthe queue because MSG_PEEK was also passed and so the call was not dequeued\nor because the I/O thread requeued it.\n\nThe unconditional requeue may then corrupt the recvmsg queue, leading to\nthings like UAFs or refcount underruns.\n\nFix this by only requeuing the call if it isn't already on the queue - and\nmoving it to the front if it is already queued.  If we don't queue it, we\nhave to put the ref we obtained by dequeuing it.\n\nAlso, MSG_PEEK doesn't dequeue the call so shouldn't call\nrxrpc_notify_socket() for the call if we didn't use up all the data on the\nqueue, so fix that also.",
  "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",
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  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/0464bf75590da75b8413c3e758c04647b4cdb3c6"
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    "type" : "WEB",
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    "url" : "https://git.kernel.org/stable/c/c198628f3fca5c874d93874c233014d336e09f64"
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    "url" : "https://git.kernel.org/stable/c/cf969bddd6e69c5777fa89dc88402204e72f312a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-362", "CWE-674" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-02-04T17:16:17Z"
  }
}