CVE-2026-70612Medium· 5.4▾ 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, requests to open external protocol URLs from web content did not take iframe sand…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 29.7 · likelihood 0.1 · 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
0.4%
0.4% → 0.5%
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, requests to open external protocol URLs from web content did not take iframe sandbox restrictions into account, so a sandboxed iframe could cause an OS-registered external application to be launched. The frame sandbox state was also not made available to the app permission handlers, affecting apps that render untrusted content in sandboxed iframes and grant the openExternal permission by default when no setPermissionRequestHandler is installed. This issue is fixed in 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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