Authentication Bypass by Primary Weakness Affecting electron package, versions >=40.0.0-alpha.2 <40.10.6>=41.0.0-alpha.1 <41.9.1>=42.0.0-alpha.1 <42.5.1>=43.0.0-alpha.1 <43.0.0
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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-JS-ELECTRON-18563352
- published6 Aug 2026
- disclosed5 Aug 2026
- creditProtocolResponse.url
Introduced: 5 Aug 2026
NewCVE-2026-70606 (opens in a new tab)How to fix?
Upgrade electron to version 40.10.6, 41.9.1, 42.5.1, 43.0.0 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 Authentication Bypass by Primary Weakness in the ProtocolResponse.url when a custom protocol handler omits the session parameter. An attacker can access cached responses from other session partitions by triggering requests that reuse the default session cache instead of the intended isolated session.
Note: This is only exploitable if applications use ProtocolResponse.url, do not set ProtocolResponse.session, and rely on session partitioning for content isolation.
Workaround
This vulnerability can be mitigated by explicitly setting the ProtocolResponse.session parameter so that requests use the correct session's cache.