Improper Restriction of Rendered UI Layers or Frames Affecting electron package, versions <39.8.8>=40.0.0-alpha.2 <40.9.1>=41.0.0-alpha.1 <41.2.1>=42.0.0-alpha.1 <42.0.0-beta.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-ELECTRON-18563354
- published6 Aug 2026
- disclosed5 Aug 2026
- creditUnknown
Introduced: 5 Aug 2026
NewCVE-2026-70600 (opens in a new tab)How to fix?
Upgrade electron to version 39.8.8, 40.9.1, 41.2.1, 42.0.0-beta.3 or higher.
Overview
electron is a framework which lets you write cross-platform desktop applications using JavaScript, HTML and CSS.
Affected versions of this package are vulnerable to Improper Restriction of Rendered UI Layers or Frames in the handling of cross-origin iframes, which allows the native autofill popup to be positioned outside the bounds of the iframe and over the embedding page's UI. An attacker can manipulate the placement of the autofill popup by embedding untrusted content in an iframe, potentially enabling clickjacking or spoofing of trusted UI.
Note: This is only exploitable if untrusted content is embedded in iframes within windows that also display trusted UI.
Workaround
This vulnerability can be mitigated by not embedding untrusted content in iframes inside windows that display trusted UI.