CVE-2026-8120: Software Security Vulnerability Vulnerability

LOW
Advisory Identifier: GHSA-x7c4-pm53-48h6
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CVSS 4.3
CWE-404
Published
Advisory Summary

CVE-2026-8120 is a LOW (CVSS 4.3) security vulnerability vulnerability (CWE-404: Improper Resource Shutdown or Release) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product does not release or incorrectly releases a resource before it is made available for re-use.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-8120 at a Glance

CVE Identifier CVE-2026-8120
GHSA Identifier GHSA-x7c4-pm53-48h6
Severity LOW
CVSS v3.1 Base Score 4.3
CWE Classification CWE-404: Improper Resource Shutdown or Release
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 4.3

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

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

How to Fix CVE-2026-8120

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-2026-8120, 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-404: Improper Resource Shutdown or Release, where the product does not release or incorrectly releases a resource before it is made available for re-use. 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

A flaw has been found in Open5GS up to 2.7.7. The affected element is the function nssf_nnrf_nsselection_handle_get_from_amf_or_vnssf of the file /src/nssf/nnssf-handler.c of the component NSSF. Executing a manipulation can lead to denial of service. The attack can be executed remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

References

NVD — CVE-2026-8120 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-8120
Software Source Repository REPOSITORY
https://github.com/open5gs/open5gs/issues/4432
Software Source Repository REPOSITORY
https://github.com/open5gs/open5gs
vuldb.com/submit/808421 WEB
https://vuldb.com/submit/808421
vuldb.com/vuln/361907 WEB
https://vuldb.com/vuln/361907
vuldb.com/vuln/361907/cti WEB
https://vuldb.com/vuln/361907/cti

Frequently Asked Questions

What is CVE-2026-8120?
CVE-2026-8120 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-404: Improper Resource Shutdown or Release.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-8120?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-8120?
CVE-2026-8120 has a CVSS v3.1 base score of 4.3 (LOW) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with CVE-2026-8120?
CVE-2026-8120 is classified under CWE-404: Improper Resource Shutdown or Release (The product does not release or incorrectly releases a resource before it is made available for re-use.).
How can I check Maven dependencies for CVE-2026-8120?
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-x7c4-pm53-48h6",
  "modified" : "2026-05-08T03:30:23Z",
  "published" : "2026-05-08T03:30:23Z",
  "aliases" : [ "CVE-2026-8120" ],
  "details" : "A flaw has been found in Open5GS up to 2.7.7. The affected element is the function nssf_nnrf_nsselection_handle_get_from_amf_or_vnssf of the file /src/nssf/nnssf-handler.c of the component NSSF. Executing a manipulation can lead to denial of service. The attack can be executed remotely. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-8120"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open5gs/open5gs/issues/4432"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/open5gs/open5gs"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/submit/808421"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/361907"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/361907/cti"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-404" ],
    "severity" : "LOW",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-05-08T01:16:09Z"
  }
}