{"id":"CVE-2026-44003","state":"PUBLISHED","title":"vm2: Transformer Fast-Path Bypass Exposes Internal State Variable","description":"vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, vm2's code transformer has a performance optimization that skips AST analysis when the code does not contain catch, import, or async keywords. This fast-path bypass allows sandboxed code to directly access the internal VM2_INTERNAL_STATE_DO_NOT_USE_OR_PROGRAM_WILL_FAIL variable, which exposes internal security functions (handleException, wrapWith, import). This vulnerability is fixed in 3.11.0.","publishedAt":"2026-05-13T17:30:38.883Z","updatedAt":"2026-05-13T18:41:25.611Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["patriksimek vm2"],"affected":[{"vendor":"patriksimek","product":"vm2","versions":[{"version":"< 3.11.0","status":"affected"}]}],"references":["https://github.com/patriksimek/vm2/security/advisories/GHSA-wp5r-2gw5-m7q7"],"weaknesses":["CWE-693"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44003.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44003","state":"PUBLISHED","datePublished":"2026-05-13T17:30:38.883Z","dateUpdated":"2026-05-13T18:41:25.611Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-04T21:24:36.505Z"},"containers":{"cna":{"title":"vm2: Transformer Fast-Path Bypass Exposes Internal State Variable","descriptions":[{"lang":"en","value":"vm2 is an open source vm/sandbox for Node.js. Prior to 3.11.0, vm2's code transformer has a performance optimization that skips AST analysis when the code does not contain catch, import, or async keywords. This fast-path bypass allows sandboxed code to directly access the internal VM2_INTERNAL_STATE_DO_NOT_USE_OR_PROGRAM_WILL_FAIL variable, which exposes internal security functions (handleException, wrapWith, import). This vulnerability is fixed in 3.11.0."}],"affected":[{"vendor":"patriksimek","product":"vm2","versions":[{"version":"< 3.11.0","status":"affected"}]}],"references":[{"url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-wp5r-2gw5-m7q7","name":"https://github.com/patriksimek/vm2/security/advisories/GHSA-wp5r-2gw5-m7q7","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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":"2026-05-13T17:30:38.883Z"},"source":{"advisory":"GHSA-wp5r-2gw5-m7q7","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/patriksimek/vm2/security/advisories/GHSA-wp5r-2gw5-m7q7","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-13T18:40:49.017308Z","id":"CVE-2026-44003","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-13T18:41:25.611Z"}}]}}}