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Vulnerability · Published Oct 21, 2026 · Assigned by GitHub_M

CVE-2026-114121Electron: openExternal permission requests can be attributed to the wrong origin

Medium 5.4

In plain English

A medium-severity security flaw in electron from electron. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.2%top 87.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
npmelectron42.11.3GHSA-997q-gvvc-jwmx
npmelectron43.7.0GHSA-997q-gvvc-jwmx
npmelectron44.3.0GHSA-997q-gvvc-jwmx
npmelectron45.0.0-alpha.5GHSA-997q-gvvc-jwmx

Affected products (as reported)

VendorProductVersions
electron electron < 42.11.3>= 43.0.0-alpha.1, < 43.7.0>= 44.0.0-alpha.1, < 44.3.0>= 45.0.0-alpha.1, < 45.0.0-alpha.5

Weakness: CWE-346 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

References