CVE-2026-44007 (GCVE-0-2026-44007)

Vulnerability from cvelistv5 – Published: 2026-05-13 17:33 – Updated: 2026-09-07 12:05
VLAI
Title
vm2: nesting: true bypasses require: false, allowing sandbox escape to arbitrary OS command execution
Summary
vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.1, when a NodeVM is created with nesting: true, sandbox code can unconditionally require('vm2') regardless of the outer VM's require configuration — including require: false. With access to vm2, the sandbox constructs a new inner NodeVM with its own unrestricted require settings and executes arbitrary OS commands on the host. Any application that runs untrusted code inside a NodeVM with nesting: true is fully compromised. This vulnerability is fixed in 3.11.1.
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-15 03:55 UTC
CWE
  • CWE-284 - Improper Access Control
  • CWE-1100 - Insufficient Isolation of System-Dependent Functions
Impacted products
Vendor Product Version CPE status
patriksimek vm2 Affected: < 3.11.1
guessed Create a notification for this product.
Red Hat Red Hat Ansible Automation Platform 2.1 Unaffected: 1785854226 , < * (rpm)
    cpe:/a:redhat:ansible_portal:2.1
Create a notification for this product.
Red Hat Red Hat Developer Hub     cpe:/a:redhat:rhdh:1
Create a notification for this product.
Show details on NVD website

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          "descriptions": [
            {
              "lang": "en",
              "value": "vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.1, when a NodeVM is created with nesting: true, sandbox code can unconditionally require(\u0027vm2\u0027) regardless of the outer VM\u0027s require configuration \u2014 including require: false. With access to vm2, the sandbox constructs a new inner NodeVM with its own unrestricted require settings and executes arbitrary OS commands on the host. Any application that runs untrusted code inside a NodeVM with nesting: true is fully compromised. This vulnerability is fixed in 3.11.1."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 9.1,
                "baseSeverity": "CRITICAL",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-284",
                  "description": "CWE-284: Improper Access Control",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-13T17:33:19.799Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/patriksimek/vm2/security/advisories/GHSA-8hg8-63c5-gwmx",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/patriksimek/vm2/security/advisories/GHSA-8hg8-63c5-gwmx"
            }
          ],
          "source": {
            "advisory": "GHSA-8hg8-63c5-gwmx",
            "discovery": "UNKNOWN"
          },
          "title": "vm2: nesting: true bypasses require: false, allowing sandbox escape to arbitrary OS command execution"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-44007",
        "datePublished": "2026-05-13T17:33:19.799Z",
        "dateReserved": "2026-05-04T21:24:36.505Z",
        "dateUpdated": "2026-09-07T12:05:07.822Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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