GHSA-8mvv-mcc3-xwhh: Duplicate Advisory External Module Allowlist Uses A Vulnerability

LOW
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CVSS 4.2
CWE-22
Published
Advisory Summary

GHSA-8mvv-mcc3-xwhh is a LOW (CVSS 4.2) external module allowlist uses a vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Duplicate Advisory libraries in the npm ecosystem. The issue involves external module allowlist uses a raw prefix test, so a prefix-sharing sibling package is treated as allowlisted. Remediation is available in the latest vendor maintenance releases.

GHSA-8mvv-mcc3-xwhh at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-8mvv-mcc3-xwhh
Severity LOW
CVSS v3.1 Base Score 4.2
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Duplicate Advisory
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 4.2

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

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

How to Fix GHSA-8mvv-mcc3-xwhh

To remediate this vulnerability, upgrade all affected Duplicate Advisory dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

vm2 fixed: Latest secure release 
npm install vm2@Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls vm2

How to Check if You Are Affected

To determine whether your Node.js application is affected by GHSA-8mvv-mcc3-xwhh, inspect your project dependencies using npm:

npm ls vm2

Analyze the terminal output to locate any version of Duplicate Advisory 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 npm ls vm2 command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Duplicate Advisory, 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

## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-7q3f-wx44-378m. This link is maintained to preserve external references. ## Original Description vm2 before 3.11.7 contains a module allowlist bypass vulnerability in isPathAllowedForModule that uses raw string prefix matching instead of boundary-anchored comparison. Attackers can reach non-allowlisted packages sharing a prefix with allowlisted modules by performing relative requires from allowlisted packages when transitive loading is disabled.

GHSA-8mvv-mcc3-xwhh Affected Duplicate Advisory Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
vm2
npm/vm2
npm
≤ 3.11.6

References

GitHub Advisory / Wiki ADVISORY
https://github.com/patriksimek/vm2/security/advisories/GHSA-7q3f-wx44-378m
NVD — GHSA-8mvv-mcc3-xwhh NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-92945
www.vulncheck.com/advisories/vm2-befo... WEB
https://www.vulncheck.com/advisories/vm2-before-3.11.7-module-allowlist-bypass-via-prefix-matching

Frequently Asked Questions

What is GHSA-8mvv-mcc3-xwhh?
GHSA-8mvv-mcc3-xwhh is a security vulnerability in Duplicate Advisory involving External module allowlist uses a raw prefix test, so a prefix-sharing sibling package is treated as allowlisted under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to current release patches across affected packages: vm2.
What version fixes GHSA-8mvv-mcc3-xwhh?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is vm2 affected?
Yes, vm2 is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of GHSA-8mvv-mcc3-xwhh?
GHSA-8mvv-mcc3-xwhh has a CVSS v3.1 base score of 4.2 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with GHSA-8mvv-mcc3-xwhh?
GHSA-8mvv-mcc3-xwhh is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check npm dependencies for GHSA-8mvv-mcc3-xwhh?
Run the dependency tree command: 'npm ls vm2'. 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-8mvv-mcc3-xwhh",
  "modified" : "2026-10-01T15:26:10Z",
  "published" : "2026-09-17T15:32:15Z",
  "withdrawn" : "2026-10-01T15:26:09Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: External module allowlist uses a raw prefix test, so a prefix-sharing sibling package is treated as allowlisted",
  "details" : "## Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-7q3f-wx44-378m. This link is maintained to preserve external references.\n\n## Original Description\nvm2 before 3.11.7 contains a module allowlist bypass vulnerability in isPathAllowedForModule that uses raw string prefix matching instead of boundary-anchored comparison. Attackers can reach non-allowlisted packages sharing a prefix with allowlisted modules by performing relative requires from allowlisted packages when transitive loading is disabled.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/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" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "vm2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "3.11.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/patriksimek/vm2/security/advisories/GHSA-7q3f-wx44-378m"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-92945"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/vm2-before-3.11.7-module-allowlist-bypass-via-prefix-matching"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-10-01T15:26:09Z",
    "nvd_published_at" : "2026-09-17T14:17:59Z"
  }
}