CVE-2026-64104: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-8rjp-wmfg-59v9
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CVSS 8.7
CWE-401
Published
Advisory Summary

CVE-2026-64104 is a HIGH (CVSS 8.7) security vulnerability vulnerability (CWE-401: Missing Release of Memory after Effective Lifetime) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-64104 at a Glance

CVE Identifier CVE-2026-64104
GHSA Identifier GHSA-8rjp-wmfg-59v9
Severity HIGH
CVSS v3.1 Base Score 8.7
CWE Classification CWE-401: Missing Release of Memory after Effective Lifetime
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.7

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:C/C:H/I:H/A:L).

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

How to Fix CVE-2026-64104

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-2026-64104, 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-401: Missing Release of Memory after Effective Lifetime, where the product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse. 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: virt: sev-guest: Explicitly leak pages in unknown state When set_memory_{encrypted,decrypted}() fail, the user cannot know at which point the function failed, meaning that the pages are left in an unknown state from the point of view of the caller. Since the pages may be left in an unencrypted state, they are not suitable for general use, and cannot be returned safely to the buddy allocator. Avoid the issue by never freeing the pages, and then do the proper accounting by calling snp_leak_pages().

References

NVD — CVE-2026-64104 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-64104
git.kernel.org/stable/c/3d0cd0065d... WEB
https://git.kernel.org/stable/c/3d0cd0065deeb054b4b29236432e851806b7cc81
git.kernel.org/stable/c/bee400ad4f... WEB
https://git.kernel.org/stable/c/bee400ad4f4259c9c0758e4f1960a1eed6f6f9f0
git.kernel.org/stable/c/fd948c3f96... WEB
https://git.kernel.org/stable/c/fd948c3f96b18ff9ba7d3e8eae13d196593e1aaf

Frequently Asked Questions

What is CVE-2026-64104?
CVE-2026-64104 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-401: Missing Release of Memory after Effective Lifetime.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-64104?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-64104?
CVE-2026-64104 has a CVSS v3.1 base score of 8.7 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L.
What CWE is associated with CVE-2026-64104?
CVE-2026-64104 is classified under CWE-401: Missing Release of Memory after Effective Lifetime (The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.).
How can I check Maven dependencies for CVE-2026-64104?
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-8rjp-wmfg-59v9",
  "modified" : "2026-07-20T15:31:59Z",
  "published" : "2026-07-19T18:31:52Z",
  "aliases" : [ "CVE-2026-64104" ],
  "details" : "In the Linux kernel, the following vulnerability has been resolved:\n\nvirt: sev-guest: Explicitly leak pages in unknown state\n\nWhen set_memory_{encrypted,decrypted}() fail, the user cannot know at which\npoint the function failed, meaning that the pages are left in an unknown state\nfrom the point of view of the caller.\n\nSince the pages may be left in an unencrypted state, they are not suitable for\ngeneral use, and cannot be returned safely to the buddy allocator. Avoid the\nissue by never freeing the pages, and then do the proper accounting by calling\nsnp_leak_pages().",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-64104"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/3d0cd0065deeb054b4b29236432e851806b7cc81"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/bee400ad4f4259c9c0758e4f1960a1eed6f6f9f0"
  }, {
    "type" : "WEB",
    "url" : "https://git.kernel.org/stable/c/fd948c3f96b18ff9ba7d3e8eae13d196593e1aaf"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-401" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-07-19T16:17:51Z"
  }
}