CVE-2026-81011: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-9rrq-fppg-695h
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CVSS 7.1
Published
Advisory Summary

CVE-2026-81011 is a HIGH (CVSS 7.1) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-81011 at a Glance

CVE Identifier CVE-2026-81011
GHSA Identifier GHSA-9rrq-fppg-695h
Severity HIGH
CVSS v3.1 Base Score 7.1
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 7.1

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

How to Fix CVE-2026-81011

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-2026-81011, 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: platform/x86: hp-bioscfg: pass validated element count to package parsers The per-type package parsers are handed the wrong element count. hp_init_bios_package_attribute() validates obj->package.count and then calls one of the five hp_populate_*_package_data() wrappers (string, integer, enumeration, ordered list, password). Each wrapper forwards a count to its hp_populate_*_elements_from_package() parser, but instead of forwarding the validated obj->package.count it derives the count from elements[0]. elements[0] is the NAME field and is always an ACPI_TYPE_STRING, so reading ->package.count from it in fact reads ->string.length through the union acpi_object. The parsers thus bound themselves against the length of the name string rather than against the real number of elements in the package. This is safe today because hp_init_bios_package_attribute() refuses any package that has fewer than the type's element count, so a parser only ever runs on a full package and never reads past it regardless of the bogus bound. An upcoming change relaxes that check to accept shorter packages. Once a parser can receive fewer elements than its per-type count, a bound taken from the name length no longer reflects the array size, and the "elem < count" loop conditions and "elem + n >= count" sub-loop guards read past the end of elements[] - an out-of-bounds heap read. Forward the validated obj->package.count to every *_package_data() wrapper so the parsers bound themselves against the real package size. This does not change behaviour for the packages that enumerate correctly today and is a prerequisite for accepting shorter packages safely.

References

NVD — CVE-2026-81011 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-81011
git.kernel.org/stable/c/400cbc3ccc... WEB
https://git.kernel.org/stable/c/400cbc3ccc88a5ad37cd85056224635ce9eba018
git.kernel.org/stable/c/436017808c... WEB
https://git.kernel.org/stable/c/436017808c7cbcdb5e49b2142090d4391e3de9a6
git.kernel.org/stable/c/467e53f231... WEB
https://git.kernel.org/stable/c/467e53f231f77a1677191b8cdabdaf1448439d55
git.kernel.org/stable/c/a38127df99... WEB
https://git.kernel.org/stable/c/a38127df99ae8b1851560b35b837c9952416143a
git.kernel.org/stable/c/e0ddfd77c0... WEB
https://git.kernel.org/stable/c/e0ddfd77c0c320b7d12b6c9169303b140b798775

Frequently Asked Questions

What is CVE-2026-81011?
CVE-2026-81011 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-2026-81011?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-81011?
CVE-2026-81011 has a CVSS v3.1 base score of 7.1 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H.
What CWE is associated with CVE-2026-81011?
CVE-2026-81011 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-81011?
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-9rrq-fppg-695h",
  "modified" : "2026-09-14T15:32:23Z",
  "published" : "2026-09-11T21:31:24Z",
  "aliases" : [ "CVE-2026-81011" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/x86: hp-bioscfg: pass validated element count to package parsers\n\nThe per-type package parsers are handed the wrong element count.\n\nhp_init_bios_package_attribute() validates obj->package.count and then\ncalls one of the five hp_populate_*_package_data() wrappers (string,\ninteger, enumeration, ordered list, password). Each wrapper forwards a\ncount to its hp_populate_*_elements_from_package() parser, but instead\nof forwarding the validated obj->package.count it derives the count\nfrom elements[0]. elements[0] is the NAME field and is always an\nACPI_TYPE_STRING, so reading ->package.count from it in fact reads\n->string.length through the union acpi_object. The parsers thus bound\nthemselves against the length of the name string rather than against\nthe real number of elements in the package.\n\nThis is safe today because hp_init_bios_package_attribute() refuses any\npackage that has fewer than the type's element count, so a parser only\never runs on a full package and never reads past it regardless of the\nbogus bound.\n\nAn upcoming change relaxes that check to accept shorter packages. Once\na parser can receive fewer elements than its per-type count, a bound\ntaken from the name length no longer reflects the array size, and the\n\"elem < count\" loop conditions and \"elem + n >= count\" sub-loop guards\nread past the end of elements[] - an out-of-bounds heap read.\n\nForward the validated obj->package.count to every *_package_data()\nwrapper so the parsers bound themselves against the real package size.\nThis does not change behaviour for the packages that enumerate\ncorrectly today and is a prerequisite for accepting shorter packages\nsafely.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-81011"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/400cbc3ccc88a5ad37cd85056224635ce9eba018"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/436017808c7cbcdb5e49b2142090d4391e3de9a6"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/467e53f231f77a1677191b8cdabdaf1448439d55"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/a38127df99ae8b1851560b35b837c9952416143a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e0ddfd77c0c320b7d12b6c9169303b140b798775"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:09Z"
  }
}