Medium 5.3Published Aug 5, 2026

CVE-2026-70607Electron: window.open features string controls some window options considered privileged

Updated under an hour ago (Oct 26, 2026, 7:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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, some window options supplied by web content in the window.open() features string were applied to the new BrowserWindow without an allowlist. Untrusted content could set window options it should not control, including options that cause the main process to access attacker-chosen file or network paths, when untrusted content can call window.open() and the app does not override child window options via setWindowOpenHandler or overrideBrowserWindowOptions. This issue is fixed in 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-20
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

electron electron electron:electron (from the name)	before 39.8.8; from 40.0.0-alpha.1, < 40.9.0; from 41.0.0-alpha.1, < 41.2.1; from 42.0.0-alpha.1, < 42.0.0-beta.3	CNA record
electronjs electron electronjs:electron	before 39.8.8; from 40.0.0 before 40.9.0; from 41.0.0 through 41.2.1; 42.0.0; 42.0.0; 42.0.0; 42.0.0; 42.0.0; and 3 more ranges	NVD

References

References

https://github.com/electron/electron/security/advisories/GHSA-v93f-fgjr-hjrj	x-refsource-confirm, vendor-advisory
https://github.com/electron/electron/pull/50946	x-refsource-misc, issue-tracking, patch
https://github.com/electron/electron/pull/50947	x-refsource-misc, issue-tracking, patch
https://github.com/electron/electron/pull/50948	x-refsource-misc, issue-tracking, patch
https://github.com/electron/electron/pull/50949	x-refsource-misc, issue-tracking, patch
https://github.com/electron/electron/commit/30cf3882de75ee651bd4e5f27002f13fd3d3163a	x-refsource-misc, patch
https://github.com/electron/electron/commit/4eff3dc09e4d1e62d649c5ce9902f532bb7469c7	x-refsource-misc, patch
https://github.com/electron/electron/commit/615d62500fc7732d068274b796c49487e652e90b	x-refsource-misc, patch
https://github.com/electron/electron/commit/fe2e7d0073949b4593b624b93abf1788f5377e55	x-refsource-misc, patch
https://github.com/electron/electron/releases/tag/v39.8.8	x-refsource-misc, release-notes
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The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.