{"id":"CVE-2020-4075","aliases":["EUVD-2020-0553","GHSA-f9mq-jph6-9mhm"],"status":"published","title":"Arbitrary file read via window-open IPC in Electron","description":"In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, arbitrary local file read is possible by defining unsafe window options on a child window opened via window.open. As a workaround, ensure you are calling `event.preventDefault()` on all new-window events where the `url` or `options` is not something you expect. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01175,"percentile":0.67788,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-552"],"published":"2020-07-07T00:01:13Z","modified":"2026-10-20T10:54:21Z","fixes":[{"ecosystem":"npm","package":"electron","fixed_in":["8.2.4","7.2.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"electron","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.0.0"},{"fixed":"8.2.4"}]}]},{"source":"ghsa","ecosystem":"npm","package":"electron","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.2.4"}]}]},{"source":"osv","ecosystem":"npm","package":"electron","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"7.2.4"}]}]},{"source":"osv","ecosystem":"npm","package":"electron","ranges":[{"type":"SEMVER","events":[{"introduced":"8.0.0"},{"fixed":"8.2.4"}]}]}],"products":[{"vendor":"electron","product":"electron"},{"vendor":"electronjs","product":"electron"}],"references":[{"url":"https://www.electronjs.org/releases/stable?page=3#release-notes-for-v824","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory","web"]},{"url":"https://github.com/electron/electron/security/advisories/GHSA-f9mq-jph6-9mhm","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-4075","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-f9mq-jph6-9mhm"}],"sources":{"cve":[{"id":"CVE-2020-4075","title":"Arbitrary file read via window-open IPC in Electron","description":"In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, arbitrary local file read is possible by defining unsafe window options on a child window opened via window.open. As a workaround, ensure you are calling `event.preventDefault()` on all new-window events where the `url` or `options` is not something you expect. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.","status":"published","published":"2020-07-07T00:05:28Z","modified":"2024-08-04T07:52:20.843Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-552"],"updated_at":"2026-11-02T14:35:55.797746Z"}],"euvd":[{"id":"EUVD-2020-0553","description":"In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, arbitrary local file read is possible by defining unsafe window options on a child window opened via window.open. As a workaround, ensure you are calling `event.preventDefault()` on all new-window events where the `url` or `options` is not something you expect. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.","status":"published","published":"2020-07-07T00:05:28Z","modified":"2024-08-04T07:52:20Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:08:08.458165Z"}],"ghsa":[{"id":"GHSA-f9mq-jph6-9mhm","title":"Arbitrary file read via window-open IPC in Electron","description":"### Impact\nThe vulnerability allows arbitrary local file read by defining unsafe window options on a child window opened via window.open.\n\n### Workarounds\nEnsure you are calling `event.preventDefault()` on all [`new-window`](https://electronjs.org/docs/api/web-contents#event-new-window) events where the `url` or `options` is not something you expect.\n\n### Fixed Versions\n* `9.0.0-beta.21`\n* `8.2.4`\n* `7.2.4`\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [security@electronjs.org](mailto:security@electronjs.org)","status":"published","published":"2020-07-07T00:01:13Z","modified":"2023-01-09T05:03:31Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-552"],"updated_at":"2026-11-02T14:36:05.071174Z"}],"nvd":[{"id":"CVE-2020-4075","description":"In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, arbitrary local file read is possible by defining unsafe window options on a child window opened via window.open. As a workaround, ensure you are calling `event.preventDefault()` on all new-window events where the `url` or `options` is not something you expect. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.","status":"published","published":"2020-07-07T00:15:10.513Z","modified":"2026-06-17T03:19:31.467Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-552"],"updated_at":"2026-11-02T14:06:08.145904Z"}],"osv":[{"id":"CVE-2020-4075","description":"In Electron before versions 7.2.4, 8.2.4, and 9.0.0-beta21, arbitrary local file read is possible by defining unsafe window options on a child window opened via window.open. As a workaround, ensure you are calling `event.preventDefault()` on all new-window events where the `url` or `options` is not something you expect. This is fixed in versions 9.0.0-beta.21, 8.2.4 and 7.2.4.","status":"published","published":"2020-07-07T00:15:10.513Z","modified":"2026-10-20T10:54:21.88553749Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:16.936975Z"},{"id":"GHSA-f9mq-jph6-9mhm","title":"Arbitrary file read via window-open IPC in Electron","description":"### Impact\nThe vulnerability allows arbitrary local file read by defining unsafe window options on a child window opened via window.open.\n\n### Workarounds\nEnsure you are calling `event.preventDefault()` on all [`new-window`](https://electronjs.org/docs/api/web-contents#event-new-window) events where the `url` or `options` is not something you expect.\n\n### Fixed Versions\n* `9.0.0-beta.21`\n* `8.2.4`\n* `7.2.4`\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [security@electronjs.org](mailto:security@electronjs.org)","status":"published","published":"2020-07-07T00:01:13Z","modified":"2026-07-08T05:59:36.781612037Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-552"],"updated_at":"2026-11-02T15:46:46.39441Z"}]}}