CVE-2026-23274: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-3cwp-73f3-j7w3
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CVSS 7.8
CWE-758
Published
Advisory Summary

CVE-2026-23274 is a HIGH (CVSS 7.8) security vulnerability vulnerability (CWE-758: Reliance on Undefined, Unspecified, or Implementation-Defined Behavior) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product uses an api function, data structure, or other entity in a way that relies on properties that are not always guaranteed to hold for that entity.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-23274 at a Glance

CVE Identifier CVE-2026-23274
GHSA Identifier GHSA-3cwp-73f3-j7w3
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification CWE-758: Reliance on Undefined, Unspecified, or Implementation-Defined Behavior
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-2026-23274

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-2026-23274, 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-758: Reliance on Undefined, Unspecified, or Implementation-Defined Behavior, where the product uses an api function, data structure, or other entity in a way that relies on properties that are not always guaranteed to hold for that entity. 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: netfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels IDLETIMER revision 0 rules reuse existing timers by label and always call mod_timer() on timer->timer. If the label was created first by revision 1 with XT_IDLETIMER_ALARM, the object uses alarm timer semantics and timer->timer is never initialized. Reusing that object from revision 0 causes mod_timer() on an uninitialized timer_list, triggering debugobjects warnings and possible panic when panic_on_warn=1. Fix this by rejecting revision 0 rule insertion when an existing timer with the same label is of ALARM type.

References

NVD — CVE-2026-23274 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23274
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-019113.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-082556.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-457936.html
cert-portal.siemens.com/productcert/html/ss... WEB
https://cert-portal.siemens.com/productcert/html/ssa-784472.html
git.kernel.org/stable/c/144f88054b... WEB
https://git.kernel.org/stable/c/144f88054ba0180467356f40895bd660b5dceeec
git.kernel.org/stable/c/28c7cfaf0c... WEB
https://git.kernel.org/stable/c/28c7cfaf0c0ab17cbd7754092116fd1af45271f9
git.kernel.org/stable/c/329f0b9b48... WEB
https://git.kernel.org/stable/c/329f0b9b48ee6ab59d1ab72fef55fe8c6463a6cf
git.kernel.org/stable/c/32e937dc6e... WEB
https://git.kernel.org/stable/c/32e937dc6e97f5ed3cdfe3fc0b2b19a05e23fa44
git.kernel.org/stable/c/5408035599... WEB
https://git.kernel.org/stable/c/54080355999381fed4a26129579a5765bab87491
git.kernel.org/stable/c/5e7ece24c5... WEB
https://git.kernel.org/stable/c/5e7ece24c5cb75a60402aad4d803c7898ea40aa9
git.kernel.org/stable/c/f228b9ae2a... WEB
https://git.kernel.org/stable/c/f228b9ae2a7e84d1153616d8e71c4236cb1f1309
git.kernel.org/stable/c/f5ef97c131... WEB
https://git.kernel.org/stable/c/f5ef97c13165542480a6ffdbe6f09f40bbb7cbf1

Frequently Asked Questions

What is CVE-2026-23274?
CVE-2026-23274 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-758: Reliance on Undefined, Unspecified, or Implementation-Defined Behavior.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-23274?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-23274?
CVE-2026-23274 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-2026-23274?
CVE-2026-23274 is classified under CWE-758: Reliance on Undefined, Unspecified, or Implementation-Defined Behavior (The product uses an API function, data structure, or other entity in a way that relies on properties that are not always guaranteed to hold for that entity.).
How can I check Maven dependencies for CVE-2026-23274?
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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  "schema_version" : "1.4.0",
  "id" : "GHSA-3cwp-73f3-j7w3",
  "modified" : "2026-10-15T03:35:20Z",
  "published" : "2026-03-20T09:32:10Z",
  "aliases" : [ "CVE-2026-23274" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: xt_IDLETIMER: reject rev0 reuse of ALARM timer labels\n\nIDLETIMER revision 0 rules reuse existing timers by label and always call\nmod_timer() on timer->timer.\n\nIf the label was created first by revision 1 with XT_IDLETIMER_ALARM,\nthe object uses alarm timer semantics and timer->timer is never initialized.\nReusing that object from revision 0 causes mod_timer() on an uninitialized\ntimer_list, triggering debugobjects warnings and possible panic when\npanic_on_warn=1.\n\nFix this by rejecting revision 0 rule insertion when an existing timer with\nthe same label is of ALARM type.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
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  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-019113.html"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-457936.html"
  }, {
    "type" : "WEB",
    "url" : "https://cert-portal.siemens.com/productcert/html/ssa-784472.html"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/144f88054ba0180467356f40895bd660b5dceeec"
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  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/329f0b9b48ee6ab59d1ab72fef55fe8c6463a6cf"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/32e937dc6e97f5ed3cdfe3fc0b2b19a05e23fa44"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/54080355999381fed4a26129579a5765bab87491"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/5e7ece24c5cb75a60402aad4d803c7898ea40aa9"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f228b9ae2a7e84d1153616d8e71c4236cb1f1309"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/f5ef97c13165542480a6ffdbe6f09f40bbb7cbf1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-758" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-03-20T09:16:13Z"
  }
}