CVE-2026-102673

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 41.10.4, 42.5.2, and 43.0.0, popups opened from a sandboxed iframe through Electron's OpenURLFromTab navigation path, including links using target="_blank" or a middle-click, did not receive the inherited HTML sandbox restrictions. An untrusted iframe using the allow-scripts allow-popups configuration could therefore open a popup with the embedding application's full origin, exposing that origin's cookies, storage, and same-origin scripting capabilities. Applications that do not embed untrusted content in sandboxed iframes are not affected. This issue is fixed in versions 41.10.4, 42.5.2, and 43.0.0.

• CWE-346
• CWE-693

• https://github.com/electron/electron/commit/7ea14d5f55ecb11a30447701ddca16b3feee0bbaPatch
• https://github.com/electron/electron/commit/e26b2640e7795c42bfb111b76009cbb4327c9a69Patch
• https://github.com/electron/electron/commit/ebe1165ee2b05c203c26dd2244ef1c5b9b1c04daPatch
• https://github.com/electron/electron/pull/52133Issue Tracking, Patch
• https://github.com/electron/electron/releases/tag/v41.10.4Issue Tracking, Patch
• https://github.com/electron/electron/releases/tag/v42.5.2Release Notes
• https://github.com/electron/electron/releases/tag/v43.0.0Release Notes
• https://github.com/electron/electron/security/advisories/GHSA-hq2x-r82h-9wj4Vendor Advisory

Published

Sep 29, 2026

Last Modified

Oct 15, 2026

Status

Analyzed

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