{"id":"CVE-2026-26954","state":"PUBLISHED","title":"SandboxJS has a Sandbox Escape","description":"SandboxJS is a JavaScript sandboxing library. Prior to 0.8.34, it is possible to obtain arrays containing Function, which allows escaping the sandbox. Given an array containing Function, and Object.fromEntries, it is possible to construct {[p]: Function} where p is any constructible property. This vulnerability is fixed in 0.8.34.","publishedAt":"2026-03-13T15:51:13.413Z","updatedAt":"2026-03-16T17:06:55.221Z","severity":{"score":10,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["nyariv SandboxJS"],"affected":[{"vendor":"nyariv","product":"SandboxJS","versions":[{"version":"< 0.8.34","status":"affected"}]}],"references":["https://github.com/nyariv/SandboxJS/security/advisories/GHSA-6r9f-759j-hjgv"],"weaknesses":["CWE-94"],"ingestedAt":"2026-10-29T20:11:21.040Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/26xxx/CVE-2026-26954.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-26954","state":"PUBLISHED","datePublished":"2026-03-13T15:51:13.413Z","dateUpdated":"2026-03-16T17:06:55.221Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-02-16T22:20:28.611Z"},"containers":{"cna":{"title":"SandboxJS has a Sandbox Escape","descriptions":[{"lang":"en","value":"SandboxJS is a JavaScript sandboxing library. Prior to 0.8.34, it is possible to obtain arrays containing Function, which allows escaping the sandbox. Given an array containing Function, and Object.fromEntries, it is possible to construct {[p]: Function} where p is any constructible property. This vulnerability is fixed in 0.8.34."}],"affected":[{"vendor":"nyariv","product":"SandboxJS","versions":[{"version":"< 0.8.34","status":"affected"}]}],"references":[{"url":"https://github.com/nyariv/SandboxJS/security/advisories/GHSA-6r9f-759j-hjgv","name":"https://github.com/nyariv/SandboxJS/security/advisories/GHSA-6r9f-759j-hjgv","tags":["x_refsource_CONFIRM"]}],"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-94","lang":"en","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-03-13T15:51:13.413Z"},"source":{"advisory":"GHSA-6r9f-759j-hjgv","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/nyariv/SandboxJS/security/advisories/GHSA-6r9f-759j-hjgv","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-03-16T17:06:51.837071Z","id":"CVE-2026-26954","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":"2026-03-16T17:06:55.221Z"}}]}}}