CVE-2026-68154: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-33w3-5969-wxfc
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CVSS 9.8
CWE-20
Published
Advisory Summary

CVE-2026-68154 is a CRITICAL (CVSS 9.8) security vulnerability vulnerability (CWE-20: Improper Input Validation) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-68154 at a Glance

CVE Identifier CVE-2026-68154
GHSA Identifier GHSA-33w3-5969-wxfc
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-20: Improper Input Validation
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
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-2026-68154

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-2026-68154, 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-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. 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: libceph: reject zero bucket types in crush_decode CRUSH bucket type 0 is reserved for devices. The mapper relies on that invariant and uses type 0 to identify leaf devices. If crush_decode() accepts a bucket with type 0, a malformed CRUSH map can make the mapper treat a negative bucket ID as a device and pass it to is_out(), which then indexes the OSD weight array with a negative value. Reject zero bucket types while decoding the CRUSH map so the invalid state never reaches the mapper.

References

NVD — CVE-2026-68154 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-68154
git.kernel.org/stable/c/05f9028422... WEB
https://git.kernel.org/stable/c/05f90284223381005d6bcddab3fda4a97f9c3401
git.kernel.org/stable/c/146461f095... WEB
https://git.kernel.org/stable/c/146461f09565afe3665e65b0423d3d6b0fe806c5
git.kernel.org/stable/c/3b2f1937f5... WEB
https://git.kernel.org/stable/c/3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56
git.kernel.org/stable/c/70998f9103... WEB
https://git.kernel.org/stable/c/70998f91030ee083ecb336a1dff0701c20a38081
git.kernel.org/stable/c/80fc40e11c... WEB
https://git.kernel.org/stable/c/80fc40e11cda1b5d990a3f69c6efa344fb5cd987
git.kernel.org/stable/c/826cd1de58... WEB
https://git.kernel.org/stable/c/826cd1de5802fd392922785f9b64d76e65d2a100
git.kernel.org/stable/c/952ca5dc99... WEB
https://git.kernel.org/stable/c/952ca5dc99913d169263f59fd689f586729a13c1
git.kernel.org/stable/c/b8a9fb6bf8... WEB
https://git.kernel.org/stable/c/b8a9fb6bf806f9c4891e71ae1beab0c07c23a877

Frequently Asked Questions

What is CVE-2026-68154?
CVE-2026-68154 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-20: Improper Input Validation.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-68154?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-68154?
CVE-2026-68154 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-68154?
CVE-2026-68154 is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check Maven dependencies for CVE-2026-68154?
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-33w3-5969-wxfc",
  "modified" : "2026-08-19T18:32:07Z",
  "published" : "2026-08-10T15:33:38Z",
  "aliases" : [ "CVE-2026-68154" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nlibceph: reject zero bucket types in crush_decode\n\nCRUSH bucket type 0 is reserved for devices.  The mapper relies on\nthat invariant and uses type 0 to identify leaf devices.\n\nIf crush_decode() accepts a bucket with type 0, a malformed CRUSH map\ncan make the mapper treat a negative bucket ID as a device and pass it\nto is_out(), which then indexes the OSD weight array with a negative\nvalue.\n\nReject zero bucket types while decoding the CRUSH map so the invalid\nstate never reaches the mapper.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-68154"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/05f90284223381005d6bcddab3fda4a97f9c3401"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/146461f09565afe3665e65b0423d3d6b0fe806c5"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3b2f1937f5fce8b7dd5432e7693e3cc8b5eece56"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/70998f91030ee083ecb336a1dff0701c20a38081"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/80fc40e11cda1b5d990a3f69c6efa344fb5cd987"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/826cd1de5802fd392922785f9b64d76e65d2a100"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/952ca5dc99913d169263f59fd689f586729a13c1"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b8a9fb6bf806f9c4891e71ae1beab0c07c23a877"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "CRITICAL",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-10T13:20:01Z"
  }
}