{"id":"CVE-2026-92944","state":"PUBLISHED","title":"vm2 3.10.2 through 3.11.6 Sandbox Escape via Promise Protector","description":"vm2 versions 3.10.2 through 3.11.6 contain a sandbox escape vulnerability on Node.js 26 where Promise.prototype.finally() bypasses vm2's wrapper protections due to a stale PromiseThenLookupChain protector in V8 14.6. Attackers can exploit this by creating an async function that returns a Promise with an attacker-controlled constructor Symbol.species, allowing them to reach the host Function constructor and process object for arbitrary code execution.","publishedAt":"2026-09-17T13:46:06.201Z","updatedAt":"2026-09-19T02:31:01.016Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"VulnCheck"},"assigner":"VulnCheck","products":["patriksimek vm2"],"affected":[{"vendor":"patriksimek","product":"vm2","packageURL":"pkg:npm/vm2","defaultStatus":"unaffected","versions":[{"version":"3.10.2","status":"affected","lessThan":"3.11.7","versionType":"semver"},{"version":"3.11.7","status":"unaffected","versionType":"semver"}]}],"references":["https://github.com/patriksimek/vm2/security/advisories/GHSA-27g9-p43v-cw3v","https://github.com/patriksimek/vm2/commit/7b26e81087ec88c287d9a4812f969d412f32774e","https://github.com/patriksimek/vm2/commit/4635ddd85839461c8ad791990023a477efefe7bd","https://www.vulncheck.com/advisories/vm2-3.10.2-through-3.11.6-sandbox-escape-via-promise-protector"],"weaknesses":["CWE-693"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/92xxx/CVE-2026-92944.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92944","state":"PUBLISHED","datePublished":"2026-09-17T13:46:06.201Z","dateUpdated":"2026-09-19T02:31:01.016Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-09-17T12:43:03.567Z"},"containers":{"cna":{"title":"vm2 3.10.2 through 3.11.6 Sandbox Escape via Promise Protector","descriptions":[{"lang":"en","value":"vm2 versions 3.10.2 through 3.11.6 contain a sandbox escape vulnerability on Node.js 26 where Promise.prototype.finally() bypasses vm2's wrapper protections due to a stale PromiseThenLookupChain protector in V8 14.6. Attackers can exploit this by creating an async function that returns a Promise with an attacker-controlled constructor Symbol.species, allowing them to reach the host Function constructor and process object for arbitrary code execution."}],"affected":[{"vendor":"patriksimek","product":"vm2","packageURL":"pkg:npm/vm2","defaultStatus":"unaffected","versions":[{"version":"3.10.2","status":"affected","lessThan":"3.11.7","versionType":"semver"},{"version":"3.11.7","status":"unaffected","versionType":"semver"}]}],"references":[{"url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-27g9-p43v-cw3v","tags":["vendor-advisory"],"name":"GitHub Security Advisory (GHSA-27g9-p43v-cw3v)"},{"url":"https://github.com/patriksimek/vm2/commit/7b26e81087ec88c287d9a4812f969d412f32774e","tags":["patch"],"name":"Patch Commit"},{"url":"https://github.com/patriksimek/vm2/commit/4635ddd85839461c8ad791990023a477efefe7bd","tags":["patch"],"name":"Patch Commit"},{"url":"https://www.vulncheck.com/advisories/vm2-3.10.2-through-3.11.6-sandbox-escape-via-promise-protector","name":"VulnCheck Advisory: vm2 3.10.2 through 3.11.6 Sandbox Escape via Promise Protector","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":9.3,"baseSeverity":"CRITICAL"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-693","lang":"en","description":"Protection Mechanism Failure","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-09-17T13:46:06.201Z"},"datePublic":"2026-08-24T00:00:00.000Z","credits":[{"lang":"en","value":"YMs0ra","type":"reporter"}],"x_generator":{"engine":"vulncheck-endgame"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-27g9-p43v-cw3v","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-19T02:30:37.300948Z","id":"CVE-2026-92944","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-19T02:31:01.016Z"}}]}}}