{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43898","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-04T16:11:33.085Z","datePublished":"2026-05-28T17:50:31.581Z","dateUpdated":"2026-05-28T19:32:45.499Z"},"containers":{"cna":{"title":"SandboxJS: Sandbox escape via Function.caller leakage of internal call op","problemTypes":[{"descriptions":[{"cweId":"CWE-94","lang":"en","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":10,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/nyariv/SandboxJS/security/advisories/GHSA-g8f2-4f4f-5jqw","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nyariv/SandboxJS/security/advisories/GHSA-g8f2-4f4f-5jqw"},{"name":"https://github.com/nyariv/SandboxJS/commit/826865251232611ec94078bab5a18ec875dad4a5","tags":["x_refsource_MISC"],"url":"https://github.com/nyariv/SandboxJS/commit/826865251232611ec94078bab5a18ec875dad4a5"}],"affected":[{"vendor":"nyariv","product":"SandboxJS","versions":[{"version":"< 0.9.6","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-28T17:50:31.581Z"},"descriptions":[{"lang":"en","value":"SandboxJS is a JavaScript sandboxing library. Prior to 0.9.6, sandbox-defined functions expose Function.caller, allowing sandboxed code to recover the internal LispType.Call runtime callback. That callback can then be invoked with attacker-controlled fake context and obj values to extract blocked host statics, recover the real host Function constructor, and execute arbitrary host JavaScript. This vulnerability is fixed in 0.9.6."}],"source":{"advisory":"GHSA-g8f2-4f4f-5jqw","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/nyariv/SandboxJS/security/advisories/GHSA-g8f2-4f4f-5jqw","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-28T19:31:59.779037Z","id":"CVE-2026-43898","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-28T19:32:45.499Z"}}]}}