CVE-2026-80959: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-9gr7-7h3r-cj7p
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CVSS 7.8
Published
Advisory Summary

CVE-2026-80959 is a HIGH (CVSS 7.8) security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2026-80959 at a Glance

CVE Identifier CVE-2026-80959
GHSA Identifier GHSA-9gr7-7h3r-cj7p
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
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-2026-80959

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-2026-80959, 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: dm-pcache: bound the persisted tail-position offset cache_pos_decode() takes the persisted key_tail and dirty_tail seg_off from the cache device and addresses within the segment with it. A seg_off at or past the segment data_size, controllable by whoever supplies the device (CAP_SYS_ADMIN), reads past the segment data. Reject a decoded seg_off that is not below the segment data_size.

References

NVD — CVE-2026-80959 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-80959
git.kernel.org/stable/c/8bf7a06ca3... WEB
https://git.kernel.org/stable/c/8bf7a06ca3c1611809725f58cfd573f2ffbda75f
git.kernel.org/stable/c/d189857609... WEB
https://git.kernel.org/stable/c/d1898576090a10d2ac2715218a652e78fb65a6b0
git.kernel.org/stable/c/ffd9a214a9... WEB
https://git.kernel.org/stable/c/ffd9a214a94f9928e54856f42b1cc3e33fb10e36

Frequently Asked Questions

What is CVE-2026-80959?
CVE-2026-80959 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-2026-80959?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-80959?
CVE-2026-80959 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-2026-80959?
CVE-2026-80959 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-80959?
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-9gr7-7h3r-cj7p",
  "modified" : "2026-09-13T09:32:09Z",
  "published" : "2026-09-11T21:31:21Z",
  "aliases" : [ "CVE-2026-80959" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\ndm-pcache: bound the persisted tail-position offset\n\ncache_pos_decode() takes the persisted key_tail and dirty_tail seg_off from\nthe cache device and addresses within the segment with it. A seg_off at or\npast the segment data_size, controllable by whoever supplies the device\n(CAP_SYS_ADMIN), reads past the segment data.\n\nReject a decoded seg_off that is not below the segment data_size.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-80959"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/8bf7a06ca3c1611809725f58cfd573f2ffbda75f"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/d1898576090a10d2ac2715218a652e78fb65a6b0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/ffd9a214a94f9928e54856f42b1cc3e33fb10e36"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:01Z"
  }
}