{"id":"CVE-2026-43898","revision":"fc78a538c5b749a0acfc4a46c9934f7f","records":[{"revision":"fc78a538c5b749a0acfc4a46c9934f7f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-43898","aliases":[],"title":"SandboxJS: Sandbox escape via Function.caller leakage of internal call op","description":"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.","state":0,"publishedAt":"2026-05-28T17:50:31.581+00:00","modifiedAt":"2026-05-28T19:32:45.499+00:00","affected":[{"ecosystem":"Vendor product","name":"SandboxJS","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"nyariv\",\n                    \"product\": \"SandboxJS\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.9.6\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10,"severity":"CRITICAL"}],"references":["https://github.com/nyariv/SandboxJS/security/advisories/GHSA-g8f2-4f4f-5jqw","https://github.com/nyariv/SandboxJS/commit/826865251232611ec94078bab5a18ec875dad4a5"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43898","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-43898","identifiers":["CVE-2026-43898"]},"retained":false,"historicalAffected":[]}],"coverage":[]}