CVE-2026-114121 Electron: openExternal permission requests can be attributed to the wrong origin
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-114121?
CVE-2026-114121 is a medium-severity vulnerability in electron, published on 21 Oct 2026.
Official description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 42.11.3, 43.7.0, 44.3.0, and 45.0.0-alpha.5, requests to open external protocol URLs could be attributed to a document other than the one that initiated them, causing the requestingUrl passed to session.setPermissionRequestHandler to identify trusted content for a launch requested by untrusted content. An application that grants openExternal based on the requesting origin and allows untrusted content to open or navigate windows could therefore allow that content to launch an OS-registered external application. This issue is fixed in versions 42.11.3, 43.7.0, 44.3.0, and 45.0.0-alpha.5.
Weakness: CWE-346
Which versions are affected by CVE-2026-114121?
8 open source packages ship an affected version, including electron.
| Package | Affected | Fixed in |
|---|---|---|
electron npm | All versions | 42.11.3 |
electron npm | All versions | 42.11.3 |
electron npm | From 43.0.0-alpha.1 | 43.7.0 |
electron npm | From 43.0.0-alpha.1 | 43.7.0 |
electron npm | From 44.0.0-alpha.1 | 44.3.0 |
electron npm | From 44.0.0-alpha.1 | 44.3.0 |
2 more packages
electron npm | From 45.0.0-alpha.1 | 45.0.0-alpha.5 |
electron npm | From 45.0.0-alpha.1 | 45.0.0-alpha.5 |
How do I fix CVE-2026-114121?
Upgrade electron to a fixed version for your release line: 42.11.3, 43.7.0, 44.3.0 or 45.0.0-alpha.5.
Is CVE-2026-114121 being exploited?
There is no known exploitation of CVE-2026-114121 in the wild and no public exploit code.
Sources
Also known as GHSA-997q-gvvc-jwmx.