{"id":"CVE-2026-47135","summary":"vm2: Sandbox escape via unblocked cross-realm Symbol.for keys + missing bridge write-trap symbol checks","details":"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.","aliases":["GHSA-m5q2-4fm3-vfqp"],"modified":"2026-07-08T08:13:37.961015897Z","published":"2026-06-12T14:14:42.022Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47135.json","cwe_ids":["CWE-693"],"cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/patriksimek/vm2/releases/tag/v3.11.4"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47135.json"},{"type":"ADVISORY","url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-m5q2-4fm3-vfqp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47135"},{"type":"FIX","url":"https://github.com/patriksimek/vm2/commit/928aef51898b5c52a05f05a40c4cfeb52e172878"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/patriksimek/vm2","events":[{"introduced":"0"},{"fixed":"928aef51898b5c52a05f05a40c4cfeb52e172878"},{"fixed":"27354d56563b0acb54eb9dd92edbc167612b9d4b"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"3.11.4"}]}}],"versions":["v3.11.3","v3.11.2","v3.11.1","v3.11.0","v3.10.5","v3.10.4","v3.10.3","v3.10.2","v3.10.1","v3.10.0","3.9.19","3.9.18","3.9.17","3.9.16","3.9.15","3.9.14","3.9.13","3.9.12","3.9.11","3.9.10","3.9.9","3.9.8","3.9.7","3.9.6","3.9.5","3.9.4","3.9.3","v3.9.2","v3.9.1","v3.9.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47135.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N"}]}