{"id":"CVE-2026-47135","state":"PUBLISHED","title":"vm2: Sandbox escape via unblocked cross-realm Symbol.for keys + missing bridge write-trap symbol checks","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.","publishedAt":"2026-06-12T14:14:42.022Z","updatedAt":"2026-06-13T03:55:55.641Z","severity":{"score":8.7,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["patriksimek vm2"],"affected":[{"vendor":"patriksimek","product":"vm2","versions":[{"version":"< 3.11.4","status":"affected"}]}],"references":["https://github.com/patriksimek/vm2/security/advisories/GHSA-m5q2-4fm3-vfqp","https://github.com/patriksimek/vm2/commit/928aef51898b5c52a05f05a40c4cfeb52e172878","https://github.com/patriksimek/vm2/releases/tag/v3.11.4"],"weaknesses":["CWE-693"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/47xxx/CVE-2026-47135.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-47135","state":"PUBLISHED","datePublished":"2026-06-12T14:14:42.022Z","dateUpdated":"2026-06-13T03:55:55.641Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-18T19:50:18.695Z"},"containers":{"cna":{"title":"vm2: Sandbox escape via unblocked cross-realm Symbol.for keys + missing bridge write-trap symbol checks","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"patriksimek","product":"vm2","versions":[{"version":"< 3.11.4","status":"affected"}]}],"references":[{"url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-m5q2-4fm3-vfqp","name":"https://github.com/patriksimek/vm2/security/advisories/GHSA-m5q2-4fm3-vfqp","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/patriksimek/vm2/commit/928aef51898b5c52a05f05a40c4cfeb52e172878","name":"https://github.com/patriksimek/vm2/commit/928aef51898b5c52a05f05a40c4cfeb52e172878","tags":["x_refsource_MISC"]},{"url":"https://github.com/patriksimek/vm2/releases/tag/v3.11.4","name":"https://github.com/patriksimek/vm2/releases/tag/v3.11.4","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-693","lang":"en","description":"CWE-693: Protection Mechanism Failure","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-06-12T14:14:42.022Z"},"source":{"advisory":"GHSA-m5q2-4fm3-vfqp","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-12T00:00:00+00:00","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-47135"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-06-13T03:55:55.641Z"}}]}}}