Origin Validation Error Affecting electron package, versions >=43.0.0-alpha.1 <43.0.0>=42.0.0-alpha.1 <42.5.2<41.10.4<45.0.0-alpha.10
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-20335498
- published30 Sept 2026
- disclosed29 Sept 2026
- creditUnknown
Introduced: 29 Sep 2026
NewCVE-2026-102673 (opens in a new tab)How to fix?
Upgrade electron to version 43.0.0, 42.5.2, 41.10.4, 45.0.0-alpha.10 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 Origin Validation Error via the OpenURLFromTab navigation path, when a sandboxed iframe with allow-popups but without allow-popups-to-escape-sandbox opens a new window. The initiating frame's sandbox restrictions are not resolved on this code path because params.frame_tree_node_id is unset for non-CURRENT_TAB dispositions, causing the sandbox check to never run. As a result, the newly created window receives full origin authority instead of inheriting the opener frame's sandbox flags, allowing a sandboxed frame to escape its confinement.
Note: This is only exploitable if the app embeds untrusted content in iframes sandboxed with allow-scripts allow-popups.