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, requests to open external protocol URLs from web content did not take iframe sandbox restrictions into account, so a sandboxed iframe could cause an OS-registered external application to be launched. The frame sandbox state was also not made available to the app permission handlers, affecting apps that render untrusted content in sandboxed iframes and grant the openExternal permission by default when no setPermissionRequestHandler is installed. This issue is fixed in 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.
Fix
Patch, vendor advisory and mitigation references on NVD 9
- https://github.com/electron/electron/commit/08b9d0a220e267d1a2402a44bdd01a2e9aa320b5 Patch
- https://github.com/electron/electron/commit/2764e4c35168855f614876051823db4f58a3714a Patch
- https://github.com/electron/electron/commit/477dcf7afc6550715f9ec5e6f39ee38e5dd7bf39 Patch
- https://github.com/electron/electron/commit/c39e3d5687d57434c8d5fe814c5152efd2f631c3 Patch
- https://github.com/electron/electron/pull/50961 Issue Tracking, Patch
- https://github.com/electron/electron/pull/50962 Issue Tracking, Patch
- https://github.com/electron/electron/pull/50963 Issue Tracking, Patch
- https://github.com/electron/electron/pull/50964 Issue Tracking, Patch
- https://github.com/electron/electron/security/advisories/GHSA-p2rr-rvmm-c5fp Vendor Advisory, Mitigation
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.4 · electronjsNVD modified 2026-10-08 13:49
Affected (CPE criteria) 9
cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha1:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha2:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha3:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha4:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha5:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:alpha6:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta1:*:*:*:node.js:*:*cpe:2.3:a:electronjs:electron:42.0.0:beta2:*:*:*:node.js:*:*
References 13
- https://github.com/electron/electron/commit/08b9d0a220e267d1a2402a44bdd01a2e9aa320b5 Patch
- https://github.com/electron/electron/commit/2764e4c35168855f614876051823db4f58a3714a Patch
- https://github.com/electron/electron/commit/477dcf7afc6550715f9ec5e6f39ee38e5dd7bf39 Patch
- https://github.com/electron/electron/commit/c39e3d5687d57434c8d5fe814c5152efd2f631c3 Patch
- https://github.com/electron/electron/pull/50961 Issue Tracking, Patch
- https://github.com/electron/electron/pull/50962 Issue Tracking, Patch
- https://github.com/electron/electron/pull/50963 Issue Tracking, Patch
- https://github.com/electron/electron/pull/50964 Issue Tracking, Patch
- https://github.com/electron/electron/releases/tag/v39.8.8 Release Notes
- https://github.com/electron/electron/releases/tag/v40.9.0 Release Notes
- https://github.com/electron/electron/releases/tag/v41.2.1 Release Notes
- https://github.com/electron/electron/releases/tag/v42.0.0-beta.3 Release Notes
- https://github.com/electron/electron/security/advisories/GHSA-p2rr-rvmm-c5fp Vendor Advisory, Mitigation