CVE-2026-68340: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-jq56-qr42-62xw
Share
CVSS 7.7
Published
Advisory Summary

CVE-2026-68340 is a HIGH (CVSS 7.7) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-68340 at a Glance

CVE Identifier CVE-2026-68340
GHSA Identifier GHSA-jq56-qr42-62xw
Severity HIGH
CVSS v3.1 Base Score 7.7
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.7

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

Attack Vector Local (AV:L)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability High (A:H)

How to Fix CVE-2026-68340

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-2026-68340, 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 General Security Weakness. 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: hwmon: occ: validate poll response sensor blocks The OCC poll response parser walks a counted list of sensor data blocks. It used the static backing-array capacity as the parse boundary, but a transport response makes only data_length bytes current and valid. A truncated response can therefore make the parser consume a block header or block extent outside the current response. Use data_length as the parent boundary, prove the fixed poll header and each current block header before reading them, and prove the complete block before advancing. Keep parsed sensor metadata local until the complete response has passed validation, then publish it. Propagate malformed-response errors before publishing the OCC as active.

References

NVD — CVE-2026-68340 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-68340
git.kernel.org/stable/c/112525534a... WEB
https://git.kernel.org/stable/c/112525534ab5cff482d35897ca4ca11fd3a76f46
git.kernel.org/stable/c/1902e95729... WEB
https://git.kernel.org/stable/c/1902e9572901d37901e3db1f3f6b0885f4e49a66
git.kernel.org/stable/c/538d862cc0... WEB
https://git.kernel.org/stable/c/538d862cc0dbd5c732fe26d5aad98eae039e6676
git.kernel.org/stable/c/54cb78eceb... WEB
https://git.kernel.org/stable/c/54cb78eceb4e286ccd5a5c01a4632157860d47f0
git.kernel.org/stable/c/6e6c72c374... WEB
https://git.kernel.org/stable/c/6e6c72c37433640514db325408bd6913ad28fe69
git.kernel.org/stable/c/70e76e700f... WEB
https://git.kernel.org/stable/c/70e76e700fc6c46afb4e17aec099a1ea089b4a22
git.kernel.org/stable/c/b042e538e9... WEB
https://git.kernel.org/stable/c/b042e538e98b939fccfffc464e2c34c29f0e96ef

Frequently Asked Questions

What is CVE-2026-68340?
CVE-2026-68340 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-68340?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-68340?
CVE-2026-68340 has a CVSS v3.1 base score of 7.7 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
What CWE is associated with CVE-2026-68340?
CVE-2026-68340 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-68340?
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-jq56-qr42-62xw",
  "modified" : "2026-08-19T18:32:15Z",
  "published" : "2026-08-10T15:33:47Z",
  "aliases" : [ "CVE-2026-68340" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nhwmon: occ: validate poll response sensor blocks\n\nThe OCC poll response parser walks a counted list of sensor data blocks.\nIt used the static backing-array capacity as the parse boundary, but a\ntransport response makes only data_length bytes current and valid. A\ntruncated response can therefore make the parser consume a block header or\nblock extent outside the current response.\n\nUse data_length as the parent boundary, prove the fixed poll header and\neach current block header before reading them, and prove the complete block\nbefore advancing. Keep parsed sensor metadata local until the complete\nresponse has passed validation, then publish it. Propagate\nmalformed-response errors before publishing the OCC as active.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-68340"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/112525534ab5cff482d35897ca4ca11fd3a76f46"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/1902e9572901d37901e3db1f3f6b0885f4e49a66"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/538d862cc0dbd5c732fe26d5aad98eae039e6676"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/54cb78eceb4e286ccd5a5c01a4632157860d47f0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/6e6c72c37433640514db325408bd6913ad28fe69"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/70e76e700fc6c46afb4e17aec099a1ea089b4a22"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/b042e538e98b939fccfffc464e2c34c29f0e96ef"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-10T13:20:24Z"
  }
}