{"id":"CVE-2026-70608","revision":null,"records":[{"revision":"922c0d690d8742b7bece3d1302fbec06","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-70608","aliases":[],"title":"Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path","description":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected, while apps that deny window creation in setWindowOpenHandler or do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in 39.8.10, 41.10.3, and 42.0.1.","state":0,"publishedAt":"2026-08-05T17:27:15.743+00:00","modifiedAt":"2026-08-05T18:46:49.877+00:00","affected":[{"ecosystem":"Vendor product","name":"electron","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"electron\",\n                    \"product\": \"electron\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 39.8.10\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 40.0.0-alpha.1, < 41.10.3\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 42.0.0-alpha.1, < 42.0.1\",\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:L/I:L/A:N","score":7.2,"severity":"HIGH"}],"references":["https://github.com/electron/electron/security/advisories/GHSA-9f4c-93c8-jc8g","https://github.com/electron/electron/pull/51437","https://github.com/electron/electron/pull/51438","https://github.com/electron/electron/pull/51439","https://github.com/electron/electron/commit/3ff23c52ab364a0afc6ab5bd7851291d3159de57","https://github.com/electron/electron/commit/57cbe329c4ae8aab5ac5ebdcb588adc9a11de0d3","https://github.com/electron/electron/commit/68cf8b7d9122260f6b534a69a82c701a56cf159f","https://github.com/electron/electron/releases/tag/v39.8.10","https://github.com/electron/electron/releases/tag/v41.10.3","https://github.com/electron/electron/releases/tag/v42.0.1"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-70608","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-70608","identifiers":["CVE-2026-70608"]},"retained":false,"historicalAffected":[]},{"revision":"c5d66b56846844ba9c62c489a75f5831","observedAt":"2026-11-09T15:06:48.308+00:00","statement":{"source":"euvd","id":"EUVD-2026-53564","aliases":["CVE-2026-70608","GHSA-9f4c-93c8-jc8g"],"title":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setW…","description":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected, while apps that deny window creation in setWindowOpenHandler or do not embed untrusted content in sandboxed iframes are not affected. 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Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-53564","identifiers":["EUVD-2026-53564","CVE-2026-70608","GHSA-9f4c-93c8-jc8g"]},"retained":false,"historicalAffected":[]},{"revision":"f878936b70524a4789940568cff2c2d9","observedAt":"2026-10-25T15:18:57.446+00:00","statement":{"source":"nvd","id":"CVE-2026-70608","aliases":[],"title":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setW…","description":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected, while apps that deny window creation in setWindowOpenHandler or do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in 39.8.10, 41.10.3, and 42.0.1.","state":0,"publishedAt":"2026-08-05T18:17:15.16+00:00","modifiedAt":"2026-10-08T13:53:39.95+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","score":7.2,"severity":"HIGH"}],"references":["https://github.com/electron/electron/commit/3ff23c52ab364a0afc6ab5bd7851291d3159de57","https://github.com/electron/electron/commit/57cbe329c4ae8aab5ac5ebdcb588adc9a11de0d3","https://github.com/electron/electron/commit/68cf8b7d9122260f6b534a69a82c701a56cf159f","https://github.com/electron/electron/pull/51437","https://github.com/electron/electron/pull/51438","https://github.com/electron/electron/pull/51439","https://github.com/electron/electron/releases/tag/v39.8.10","https://github.com/electron/electron/releases/tag/v41.10.3","https://github.com/electron/electron/releases/tag/v42.0.1","https://github.com/electron/electron/security/advisories/GHSA-9f4c-93c8-jc8g"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-70608","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-693","CWE-1021"],"productCriteria":["cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-08-05T18:17:15.160","lastModified":"2026-10-08T13:53:39.950"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-70608","identifiers":["CVE-2026-70608"]},"retained":false,"historicalAffected":[]},{"revision":"6d72124eea974d79bea9490657ae5047","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-9f4c-93c8-jc8g","aliases":["CVE-2026-70608"],"title":"Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path","description":"### Impact\nA sandboxed iframe without the `allow-popups` keyword could still open a new window (or trigger `setWindowOpenHandler`) with no user interaction, because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction.\n\nApps that embed untrusted content in sandboxed iframes and rely on the absence of `allow-popups` to prevent window creation are affected. Apps that deny window creation in `setWindowOpenHandler`, or that do not embed untrusted content in sandboxed iframes, are not affected.\n\n### Workarounds\nReturn `{ action: 'deny' }` from `setWindowOpenHandler` for any content you do not trust, rather than relying on the iframe sandbox alone.\n\n### Fixed Versions\n* `42.0.1`\n* `41.10.3`\n* `39.8.10`\n\n### For more information\nIf you have any questions or comments about this advisory, email Electron at [security@electronjs.org](mailto:security@electronjs.org)","state":0,"publishedAt":"2026-08-05T17:27:18+00:00","modifiedAt":"2026-08-20T05:15:07.1518205+00:00","affected":[{"ecosystem":"npm","name":"electron","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"42.0.0-alpha.1"},{"kind":"fixed","version":"42.0.1"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"electron","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"40.0.0-alpha.1"},{"kind":"fixed","version":"41.10.3"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"npm","name":"electron","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"39.8.10"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"HIGH"}],"references":["https://github.com/electron/electron/security/advisories/GHSA-9f4c-93c8-jc8g","https://github.com/electron/electron/pull/51437","https://github.com/electron/electron/pull/51438","https://github.com/electron/electron/pull/51439","https://github.com/electron/electron/commit/3ff23c52ab364a0afc6ab5bd7851291d3159de57","https://github.com/electron/electron/commit/57cbe329c4ae8aab5ac5ebdcb588adc9a11de0d3","https://github.com/electron/electron/commit/68cf8b7d9122260f6b534a69a82c701a56cf159f","https://github.com/electron/electron","https://github.com/electron/electron/releases/tag/v39.8.10","https://github.com/electron/electron/releases/tag/v41.10.3","https://github.com/electron/electron/releases/tag/v42.0.1"],"sourceUrl":"https://github.com/advisories/GHSA-9f4c-93c8-jc8g","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-9f4c-93c8-jc8g","identifiers":["GHSA-9f4c-93c8-jc8g","CVE-2026-70608"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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