CVE-2026-89608: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-m87w-w8mv-rf6c
Share
CVSS 7.1
Published
Advisory Summary

CVE-2026-89608 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-2026-89608 at a Glance

CVE Identifier CVE-2026-89608
GHSA Identifier GHSA-m87w-w8mv-rf6c
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-2026-89608

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-2026-89608, 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: ecryptfs: pass packet set buffer size to parser ecryptfs_parse_packet_set() receives a pointer into the file header, but it calculates the remaining packet buffer size from PAGE_SIZE - 8. For version 1 headers the packet set starts later in the header, so this can overstate the available buffer. Pass the actual packet set buffer length from the caller and calculate per-packet limits from the remaining bytes in that buffer. Recompute the remaining length after consuming a tag 3 packet before parsing the following tag 11 packet.

References

NVD — CVE-2026-89608 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-89608
git.kernel.org/stable/c/2602b79c5b... WEB
https://git.kernel.org/stable/c/2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2
git.kernel.org/stable/c/329de8b9e9... WEB
https://git.kernel.org/stable/c/329de8b9e988b152b938f09224670d97bada0b96
git.kernel.org/stable/c/3bd9bb3e16... WEB
https://git.kernel.org/stable/c/3bd9bb3e167a7c14a50423f6ff03ee0fb007199d
git.kernel.org/stable/c/66a87559ec... WEB
https://git.kernel.org/stable/c/66a87559ecb26afe80ad512faf728a158e2b81da
git.kernel.org/stable/c/747fd45be3... WEB
https://git.kernel.org/stable/c/747fd45be396a6aea3420ab657a0ab4e60185b05
git.kernel.org/stable/c/749fa08d8f... WEB
https://git.kernel.org/stable/c/749fa08d8f1b318bd8f4669a14a8a4a8c1bbdaac
git.kernel.org/stable/c/e5d254e654... WEB
https://git.kernel.org/stable/c/e5d254e654f2311a3c4b9c791d7f216554bcd17a
git.kernel.org/stable/c/e7573b0e30... WEB
https://git.kernel.org/stable/c/e7573b0e3058c6bbdfe81673f22c09900fde9e65

Frequently Asked Questions

What is CVE-2026-89608?
CVE-2026-89608 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-2026-89608?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-89608?
CVE-2026-89608 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-2026-89608?
CVE-2026-89608 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2026-89608?
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-m87w-w8mv-rf6c",
  "modified" : "2026-09-14T15:32:31Z",
  "published" : "2026-09-11T21:31:33Z",
  "aliases" : [ "CVE-2026-89608" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\necryptfs: pass packet set buffer size to parser\n\necryptfs_parse_packet_set() receives a pointer into the file header, but\nit calculates the remaining packet buffer size from PAGE_SIZE - 8.  For\nversion 1 headers the packet set starts later in the header, so this can\noverstate the available buffer.\n\nPass the actual packet set buffer length from the caller and calculate\nper-packet limits from the remaining bytes in that buffer.  Recompute the\nremaining length after consuming a tag 3 packet before parsing the\nfollowing tag 11 packet.",
  "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-2026-89608"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/2602b79c5b3e2f6fce12e38a670f8e3fda4e46a2"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/329de8b9e988b152b938f09224670d97bada0b96"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3bd9bb3e167a7c14a50423f6ff03ee0fb007199d"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/66a87559ecb26afe80ad512faf728a158e2b81da"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/747fd45be396a6aea3420ab657a0ab4e60185b05"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/749fa08d8f1b318bd8f4669a14a8a4a8c1bbdaac"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e5d254e654f2311a3c4b9c791d7f216554bcd17a"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/e7573b0e3058c6bbdfe81673f22c09900fde9e65"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-11T20:19:45Z"
  }
}