{"id":"GHSA-997q-gvvc-jwmx","summary":"Electron: openExternal permission requests can be attributed to the wrong origin","details":"### Impact\nRequests to open external protocol URLs could be attributed to a document other than the one that asked for them, so the `requestingUrl` passed to `session.setPermissionRequestHandler` was a trusted origin for a launch untrusted content had requested. An origin-based handler could therefore let untrusted content launch an OS-registered external application.\n\nApps are only affected if they grant `openExternal` based on the requesting origin and let untrusted content open or navigate windows. Apps whose permission handler denies `openExternal` for untrusted content are not affected.\n\n### Workarounds\nDeny the `openExternal` permission for untrusted content, or deny the windows it opens with `setWindowOpenHandler`.\n\n### Fixed Versions\n* `45.0.0-alpha.5`\n* `44.3.0`\n* `43.7.0`\n* `42.11.3`\n\n### For more information\nIf you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)","aliases":["CVE-2026-114121"],"modified":"2026-10-22T17:00:05.173770092Z","published":"2026-10-22T16:43:59Z","database_specific":{"nvd_published_at":"2026-10-21T17:18:25Z","cwe_ids":["CWE-346"],"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-10-22T16:43:59Z"},"references":[{"type":"WEB","url":"https://github.com/electron/electron/security/advisories/GHSA-997q-gvvc-jwmx"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-114121"},{"type":"WEB","url":"https://github.com/electron/electron/pull/53699"},{"type":"WEB","url":"https://github.com/electron/electron/pull/53698"},{"type":"WEB","url":"https://github.com/electron/electron/pull/53697"},{"type":"WEB","url":"https://github.com/electron/electron/pull/53696"},{"type":"WEB","url":"https://github.com/electron/electron/pull/53682"},{"type":"WEB","url":"https://github.com/electron/electron/commit/e3a400911084537bce7380ffea8af939572ce8dd"},{"type":"WEB","url":"https://github.com/electron/electron/commit/e0a20d5277b567aea8603f8e9852a4341407a586"},{"type":"WEB","url":"https://github.com/electron/electron/commit/92a783952891805f2f82f344c40a6917b98a7d98"},{"type":"WEB","url":"https://github.com/electron/electron/commit/8aa5414f73792ed3b2e3f9ab6391b1832e6dc2c3"},{"type":"WEB","url":"https://github.com/electron/electron/commit/25057643bf6d9a20bad69e45707551ccf546f5ce"},{"type":"WEB","url":"https://github.com/electron/electron/releases/tag/v42.11.3"},{"type":"WEB","url":"https://github.com/electron/electron/releases/tag/v43.7.0"},{"type":"WEB","url":"https://github.com/electron/electron/releases/tag/v44.3.0"},{"type":"WEB","url":"https://github.com/electron/electron/releases/tag/v45.0.0-alpha.5"},{"type":"PACKAGE","url":"https://github.com/electron/electron"}],"affected":[{"package":{"name":"electron","ecosystem":"npm","purl":"pkg:npm/electron"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"42.11.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-997q-gvvc-jwmx/GHSA-997q-gvvc-jwmx.json"}},{"package":{"name":"electron","ecosystem":"npm","purl":"pkg:npm/electron"},"ranges":[{"type":"SEMVER","events":[{"introduced":"43.0.0-alpha.1"},{"fixed":"43.7.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-997q-gvvc-jwmx/GHSA-997q-gvvc-jwmx.json"}},{"package":{"name":"electron","ecosystem":"npm","purl":"pkg:npm/electron"},"ranges":[{"type":"SEMVER","events":[{"introduced":"44.0.0-alpha.1"},{"fixed":"44.3.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-997q-gvvc-jwmx/GHSA-997q-gvvc-jwmx.json"}},{"package":{"name":"electron","ecosystem":"npm","purl":"pkg:npm/electron"},"ranges":[{"type":"SEMVER","events":[{"introduced":"45.0.0-alpha.1"},{"fixed":"45.0.0-alpha.5"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-997q-gvvc-jwmx/GHSA-997q-gvvc-jwmx.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N"}]}