{"id":"CVE-2026-102673","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-102673","generatedAt":"2026-10-28T01:01:11.618Z","title":"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.","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.","published":"2026-09-29T17:17:07.000Z","lastModified":"2026-10-15T14:01:06.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-346","CWE-693"],"affected":["electronjs/electron"],"epss":{"score":0.00132,"percentile":0.02756,"date":"2026-10-26","history":[{"date":"2026-09-30","score":0.00147,"percentile":0.03339}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.13%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-15T16:15:11.000Z","detail":{"from":"8.2","score":"6.1","severity":"MEDIUM","fromSeverity":"HIGH"},"summary":"Now scored CVSS 6.1 MEDIUM (was 8.2)."},{"kind":"new","label":"New CVE","at":"2026-09-29T17:17:07.000Z","detail":{"score":"8.2","severity":"HIGH","publishedAt":"2026-09-29T17:17:07.487Z"},"summary":"New CVE, medium severity (CVSS 6.1)."}],"references":[{"url":"https://github.com/electron/electron/commit/7ea14d5f55ecb11a30447701ddca16b3feee0bba","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/commit/e26b2640e7795c42bfb111b76009cbb4327c9a69","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/commit/ebe1165ee2b05c203c26dd2244ef1c5b9b1c04da","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/pull/52133","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/releases/tag/v41.10.4","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/releases/tag/v42.5.2","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/releases/tag/v43.0.0","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/electron/electron/security/advisories/GHSA-hq2x-r82h-9wj4","tags":["Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-102673","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}