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Vulnerability record · CVE-2026-70608 · published 5 August 2026

CVE-2026-70608: Clickjacking vulnerability

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected, while apps that deny window creation in setWindowOpenHandler or do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in 39.8.10, 41.10.3, and 42.0.1.

7.2 CVSS 3.1 High EPSS 0.45% · top 63.5% CWE-693 · CWE-693CWE-1021 · Clickjacking Awaiting Analysis
7.2CVSS 3.1 base score
0.45%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
10References
8 Sep 2026Last modified by NVD

Description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 41.10.3, and 42.0.1, a sandboxed iframe without the allow-popups keyword could still open a new window or trigger setWindowOpenHandler with no user interaction because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction. Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected, while apps that deny window creation in setWindowOpenHandler or do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in 39.8.10, 41.10.3, and 42.0.1.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References

LinkTags
https://github.com/electron/electron/commit/3ff23c52ab364a0afc6ab5bd7851291d3159de57
https://github.com/electron/electron/commit/57cbe329c4ae8aab5ac5ebdcb588adc9a11de0d3
https://github.com/electron/electron/commit/68cf8b7d9122260f6b534a69a82c701a56cf159f
https://github.com/electron/electron/pull/51437
https://github.com/electron/electron/pull/51438
https://github.com/electron/electron/pull/51439
https://github.com/electron/electron/releases/tag/v39.8.10
https://github.com/electron/electron/releases/tag/v41.10.3
https://github.com/electron/electron/releases/tag/v42.0.1
https://github.com/electron/electron/security/advisories/GHSA-9f4c-93c8-jc8g

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Source: NIST National Vulnerability Database (record CVE-2026-70608), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.