{"id":"CVE-2026-70601","revision":"d9cf9f753b7247e3ad97776ebf88a04d","records":[{"revision":"d9cf9f753b7247e3ad97776ebf88a04d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-70601","aliases":[],"title":"Electron: Context isolation bypass via Function.prototype.bind hijack","description":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.5, apps that expose Promise-returning functions to web content via contextBridge may be vulnerable to a context isolation bypass. Untrusted web content could obtain access to the isolated preload world and, through it, every capability the preload script has. In renderers without a sandbox, or with nodeIntegration enabled, this may escalate to Node.js access. Apps are affected if they expose Promise-returning functions via contextBridge, the standard pattern for wrapping ipcRenderer.invoke, in windows that load untrusted content. This issue is fixed in versions 39.8.9, 40.9.2, 41.2.2, and 42.0.0-beta.5.","state":0,"publishedAt":"2026-08-05T15:45:31.315+00:00","modifiedAt":"2026-08-05T17:30:28.446+00:00","affected":[{"ecosystem":"Vendor product","name":"electron","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"electron\",\n                    \"product\": \"electron\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 39.8.9\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 40.0.0-alpha.1, < 40.9.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 41.0.0-alpha.1, < 41.2.2\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 42.0.0-alpha.1, < 42.0.0-beta.5\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","score":7.5,"severity":"HIGH"}],"references":["https://github.com/electron/electron/security/advisories/GHSA-h7rp-cf8h-j98x"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-70601","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-70601","identifiers":["CVE-2026-70601"]},"retained":false,"historicalAffected":[]}],"coverage":[]}