{"id":"GHSA-gr2m-v5gq-v685","summary":"Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions","details":"### Impact\n\nWindows opened from a sandboxed top-level document did not inherit that document's HTML `sandbox` restrictions, so content that was meant to run sandboxed could open a window with the app's full origin. GHSA-hq2x-r82h-9wj4 covers the same issue for sandboxed iframes.\n\nApps are only affected if they render untrusted content in a sandboxed top-level document that allows popups. Apps that deny popups from untrusted content with `setWindowOpenHandler` are not affected.\n\n### Workarounds\n\nReturn `{ action: 'deny' }` from `setWindowOpenHandler` for windows opened by untrusted content.\n\n### Fixed Versions\n\n* `44.0.0-beta.5`\n* `43.4.1`\n* `42.9.2`\n* `41.10.6`\n\n### For more information\n\nIf you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)","aliases":["CVE-2026-102674"],"modified":"2026-09-29T18:15:04.698174561Z","published":"2026-09-29T18:05:11Z","database_specific":{"github_reviewed_at":"2026-09-29T18:05:11Z","nvd_published_at":null,"cwe_ids":["CWE-266","CWE-693"],"severity":"HIGH","github_reviewed":true},"references":[{"type":"WEB","url":"https://github.com/electron/electron/security/advisories/GHSA-gr2m-v5gq-v685"},{"type":"WEB","url":"https://github.com/electron/electron/commit/29fc130569f970e91e355383821a4af0f25724a2"},{"type":"WEB","url":"https://github.com/electron/electron/commit/3ecf3e74f4be6e2360644679b0b4698742be0e1d"},{"type":"WEB","url":"https://github.com/electron/electron/commit/6594d5a5b074cf501da084dc7908d3df0d68a886"},{"type":"WEB","url":"https://github.com/electron/electron/commit/e9c4d3cbe912e18d7c63af78e63e98ae7a48cd3a"},{"type":"PACKAGE","url":"https://github.com/electron/electron"},{"type":"WEB","url":"https://github.com/electron/electron/releases/tag/v41.10.6"},{"type":"WEB","url":"https://github.com/electron/electron/releases/tag/v42.9.2"},{"type":"WEB","url":"https://github.com/electron/electron/releases/tag/v43.4.1"},{"type":"WEB","url":"https://github.com/electron/electron/releases/tag/v44.0.0-beta.5"}],"affected":[{"package":{"name":"electron","ecosystem":"npm","purl":"pkg:npm/electron"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"41.10.6"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-gr2m-v5gq-v685/GHSA-gr2m-v5gq-v685.json"}},{"package":{"name":"electron","ecosystem":"npm","purl":"pkg:npm/electron"},"ranges":[{"type":"SEMVER","events":[{"introduced":"42.0.0-alpha.1"},{"fixed":"42.9.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-gr2m-v5gq-v685/GHSA-gr2m-v5gq-v685.json"}},{"package":{"name":"electron","ecosystem":"npm","purl":"pkg:npm/electron"},"ranges":[{"type":"SEMVER","events":[{"introduced":"43.0.0-alpha.1"},{"fixed":"43.4.1"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-gr2m-v5gq-v685/GHSA-gr2m-v5gq-v685.json"}},{"package":{"name":"electron","ecosystem":"npm","purl":"pkg:npm/electron"},"ranges":[{"type":"SEMVER","events":[{"introduced":"44.0.0-alpha.1"},{"fixed":"44.0.0-beta.5"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-gr2m-v5gq-v685/GHSA-gr2m-v5gq-v685.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N"}]}