{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-34217","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-03-26T15:57:52.324Z","datePublished":"2026-04-06T15:12:52.871Z","dateUpdated":"2026-04-06T15:40:46.653Z"},"containers":{"cna":{"title":"SandboxJS has a Sandbox Escape via Prop Object Leak in New Handler","problemTypes":[{"descriptions":[{"cweId":"CWE-668","lang":"en","description":"CWE-668: Exposure of Resource to Wrong Sphere","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"LOW","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":6.9,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/nyariv/SandboxJS/security/advisories/GHSA-hg73-4w7g-q96w","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nyariv/SandboxJS/security/advisories/GHSA-hg73-4w7g-q96w"}],"affected":[{"vendor":"nyariv","product":"SandboxJS","versions":[{"version":"< 0.8.36","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-04-06T15:12:52.871Z"},"descriptions":[{"lang":"en","value":"SandboxJS is a JavaScript sandboxing library. Prior to 0.8.36, a scope modification vulnerability exists in @nyariv/sandboxjs. The vulnerability allows untrusted sandboxed code to leak internal interpreter objects through the new operator, exposing sandbox scope objects in the scope hierarchy to untrusted code; an unexpected and undesired exploit. While this could allow modifying scopes inside the sandbox, code evaluation remains sandboxed and prototypes remain protected throughout the execution. This vulnerability is fixed in 0.8.36."}],"source":{"advisory":"GHSA-hg73-4w7g-q96w","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/nyariv/SandboxJS/security/advisories/GHSA-hg73-4w7g-q96w","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-06T15:33:58.430676Z","id":"CVE-2026-34217","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-06T15:40:46.653Z"}}]}}