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Vulnerability record · CVE-2026-47135 · published 12 June 2026

CVE-2026-47135: vm2 is an open source vm/sandbox for Node.js.

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, Symbol.for override in setup-sandbox.js only intercepts 2 of 9 dangerous Node.js cross-realm symbols. Combined with the bridge's set/defineProperty/deleteProperty traps having no isDangerousCrossRealmSymbol key check, sandbox code can obtain real cross-realm symbols, write them to host objects, and control host-side behavior — verified with a full util.promisify hijack chain. This issue has been patched in version 3.11.4.

8.7 CVSS 3.1 High EPSS 0.44% · top 64.1% CWE-693 · CWE-693 Deferred
8.7CVSS 3.1 base score
0.44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

Description

vm2 is an open source vm/sandbox for Node.js. Prior to version 3.11.4, Symbol.for override in setup-sandbox.js only intercepts 2 of 9 dangerous Node.js cross-realm symbols. Combined with the bridge's set/defineProperty/deleteProperty traps having no isDangerousCrossRealmSymbol key check, sandbox code can obtain real cross-realm symbols, write them to host objects, and control host-side behavior — verified with a full util.promisify hijack chain. This issue has been patched in version 3.11.4.

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

References

LinkTags
https://github.com/patriksimek/vm2/commit/928aef51898b5c52a05f05a40c4cfeb52e172878
https://github.com/patriksimek/vm2/releases/tag/v3.11.4
https://github.com/patriksimek/vm2/security/advisories/GHSA-m5q2-4fm3-vfqp

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Source: NIST National Vulnerability Database (record CVE-2026-47135), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.