{"id":"CVE-2026-102673","state":"PUBLISHED","title":"Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab","description":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target=\"_blank\" or a middle-click, did not receive the inherited HTML sandbox restrictions. An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application's full origin, exposing that origin's cookies, storage, and same-origin scripting capabilities. Applications that do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in versions 41.10.4, 42.5.2, and 43.0.0.","publishedAt":"2026-09-29T16:38:41.946Z","updatedAt":"2026-09-30T20:11:08.290Z","severity":{"score":8.2,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["electron electron"],"affected":[{"vendor":"electron","product":"electron","versions":[{"version":"< 41.10.4","status":"affected"},{"version":">= 42.0.0-alpha.1, < 42.5.2","status":"affected"},{"version":">= 43.0.0-alpha.1, < 43.0.0","status":"affected"}]}],"references":["https://github.com/electron/electron/security/advisories/GHSA-hq2x-r82h-9wj4","https://github.com/electron/electron/pull/52133","https://github.com/electron/electron/commit/7ea14d5f55ecb11a30447701ddca16b3feee0bba","https://github.com/electron/electron/commit/e26b2640e7795c42bfb111b76009cbb4327c9a69","https://github.com/electron/electron/commit/ebe1165ee2b05c203c26dd2244ef1c5b9b1c04da","https://github.com/electron/electron/releases/tag/v41.10.4","https://github.com/electron/electron/releases/tag/v42.5.2","https://github.com/electron/electron/releases/tag/v43.0.0"],"weaknesses":["CWE-346","CWE-693"],"ingestedAt":"2026-10-29T20:10:13.529Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/102xxx/CVE-2026-102673.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-102673","state":"PUBLISHED","datePublished":"2026-09-29T16:38:41.946Z","dateUpdated":"2026-09-30T20:11:08.290Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-09-29T16:10:04.075Z"},"containers":{"cna":{"title":"Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab","descriptions":[{"lang":"en","value":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target=\"_blank\" or a middle-click, did not receive the inherited HTML sandbox restrictions. An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application's full origin, exposing that origin's cookies, storage, and same-origin scripting capabilities. Applications that do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in versions 41.10.4, 42.5.2, and 43.0.0."}],"affected":[{"vendor":"electron","product":"electron","versions":[{"version":"< 41.10.4","status":"affected"},{"version":">= 42.0.0-alpha.1, < 42.5.2","status":"affected"},{"version":">= 43.0.0-alpha.1, < 43.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/electron/electron/security/advisories/GHSA-hq2x-r82h-9wj4","name":"https://github.com/electron/electron/security/advisories/GHSA-hq2x-r82h-9wj4","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/electron/electron/pull/52133","name":"https://github.com/electron/electron/pull/52133","tags":["x_refsource_MISC"]},{"url":"https://github.com/electron/electron/commit/7ea14d5f55ecb11a30447701ddca16b3feee0bba","name":"https://github.com/electron/electron/commit/7ea14d5f55ecb11a30447701ddca16b3feee0bba","tags":["x_refsource_MISC"]},{"url":"https://github.com/electron/electron/commit/e26b2640e7795c42bfb111b76009cbb4327c9a69","name":"https://github.com/electron/electron/commit/e26b2640e7795c42bfb111b76009cbb4327c9a69","tags":["x_refsource_MISC"]},{"url":"https://github.com/electron/electron/commit/ebe1165ee2b05c203c26dd2244ef1c5b9b1c04da","name":"https://github.com/electron/electron/commit/ebe1165ee2b05c203c26dd2244ef1c5b9b1c04da","tags":["x_refsource_MISC"]},{"url":"https://github.com/electron/electron/releases/tag/v41.10.4","name":"https://github.com/electron/electron/releases/tag/v41.10.4","tags":["x_refsource_MISC"]},{"url":"https://github.com/electron/electron/releases/tag/v42.5.2","name":"https://github.com/electron/electron/releases/tag/v42.5.2","tags":["x_refsource_MISC"]},{"url":"https://github.com/electron/electron/releases/tag/v43.0.0","name":"https://github.com/electron/electron/releases/tag/v43.0.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":8.2,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-346","lang":"en","description":"CWE-346: Origin Validation Error","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-693","lang":"en","description":"CWE-693: Protection Mechanism Failure","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-09-29T16:38:41.946Z"},"source":{"advisory":"GHSA-hq2x-r82h-9wj4","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102673","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-30T19:34:09.694143Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-30T20:11:08.290Z"}}]}}}