CVE-2026-70602Medium· 6.6▾ SunlitElectron 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's own session. …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 36.3 · likelihood 0 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
0.2% → 0.2%
Last analysed / modified upstream
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's 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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
electron < 39.8.8electron >= 40.0.0-alpha.1, < 40.9.0electron >= 41.0.0-alpha.1, < 41.2.1electron >= 42.0.0-alpha.1, < 42.0.0-beta.3Patched in:
electron 39.8.8electron 40.9.0electron 41.2.1electron 42.0.0-beta.3Connected by shared product, vendor, weakness, or advisory.
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