{"id":"EUVD-2026-53435","enisaUuid":"e405ab83-a807-3ad3-b034-bd86b7f90d58","description":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, extension tab and scripting APIs were not scoped to the extension\u0027s own session. A malicious or compromised extension loaded into one session could navigate, script, and read from windows belonging to a different session. Apps are only affected if they load Chrome extensions via session.loadExtension and rely on separate sessions to isolate that extension from other content. This issue is fixed in versions 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.","datePublished":"Aug 5, 2026, 3:54:49 PM","dateUpdated":"Aug 5, 2026, 4:13:06 PM","baseScore":6.6,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N","references":"https://github.com/electron/electron/security/advisories/GHSA-m55f-7gqj-fr98\n","aliases":"CVE-2026-70602\nGHSA-m55f-7gqj-fr98\n","assigner":"GitHub_M","epss":0.26,"enisaIdProduct":[{"id":"7755f248-b6b0-3751-9498-71d3b73a9828","product":{"name":"electron","vendor":{"name":"electron"}},"product_version":"\u003c 39.8.8"},{"id":"822a2dde-52be-304f-a706-3baaa501c2f8","product":{"name":"electron","vendor":{"name":"electron"}},"product_version":"42.0.0-alpha.1, \u003c 42.0.0-beta.3"},{"id":"98a84ae2-91c0-3a30-af36-02ac2915f3e0","product":{"name":"electron","vendor":{"name":"electron"}},"product_version":"40.0.0-alpha.1, \u003c 40.9.0"},{"id":"cf38fce5-c517-3dcb-a5ac-306faadd2ef7","product":{"name":"electron","vendor":{"name":"electron"}},"product_version":"41.0.0-alpha.1, \u003c 41.2.1"}],"enisaIdVendor":[{"id":"2aad0122-1190-3ae7-9b8f-69bd65c3206f","vendor":{"name":"electron"}}],"enisaIdVulnerability":[{"id":"5d45fe61-22ff-3c38-92a1-8e2bc3007bde","vulnerability":{"id":"GHSA-m55f-7gqj-fr98","description":"Electron: Extension tab APIs operate across session boundaries","datePublished":"Aug 5, 2026, 3:57:11 PM","dateUpdated":"Aug 5, 2026, 3:57:11 PM","baseScore":0.0,"references":"https://github.com/electron/electron/security/advisories/GHSA-m55f-7gqj-fr98\nhttps://github.com/electron/electron\n","enisa_id":"EUVD-2026-53435\n","aliases":"GHSA-m55f-7gqj-fr98\nCVE-2026-70602\n","epss":0.0,"dataProcessed":"Nov 1, 2026, 2:03:49 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}},{"id":"c20912cb-0050-370d-ac51-fa00271fc82e","vulnerability":{"id":"CVE-2026-70602","description":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, extension tab and scripting APIs were not scoped to the extension\u0027s own session. A malicious or compromised extension loaded into one session could navigate, script, and read from windows belonging to a different session. Apps are only affected if they load Chrome extensions via session.loadExtension and rely on separate sessions to isolate that extension from other content. This issue is fixed in versions 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.","datePublished":"Aug 5, 2026, 3:54:49 PM","dateUpdated":"Aug 5, 2026, 4:13:06 PM","status":"PUBLISHED","baseScore":6.6,"baseScoreVersion":"3.1","baseScoreVector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N","references":"https://github.com/electron/electron/security/advisories/GHSA-m55f-7gqj-fr98\n","enisa_id":"EUVD-2026-53435\n","assigner":"GitHub_M","epss":0.26,"dataProcessed":"Nov 5, 2026, 7:13:15 AM","vulnerabilityProduct":[{"id":"16d7a786-696b-3c71-9c26-ad6cc12ed61f","product":{"name":"electron","vendor":{"name":"electron"}},"product_version":"\u003c 39.8.8"},{"id":"3e8619c9-57e6-3243-be44-a3e40b0b1b7b","product":{"name":"electron","vendor":{"name":"electron"}},"product_version":"40.0.0-alpha.1, \u003c 40.9.0"},{"id":"cdee655f-e79b-300c-a313-8506c904271d","product":{"name":"electron","vendor":{"name":"electron"}},"product_version":"41.0.0-alpha.1, \u003c 41.2.1"},{"id":"eccde171-ff00-34bf-96a4-8900ecf504dc","product":{"name":"electron","vendor":{"name":"electron"}},"product_version":"42.0.0-alpha.1, \u003c 42.0.0-beta.3"}],"vulnerabilityVendor":[{"id":"1c6656f6-7555-3f6a-9f85-59af154e1c85","vendor":{"name":"electron"}}]}}],"enisaIdAdvisory":[]}