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CVE-2026-114121

5.4 · MEDIUM

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS.

Published Oct 21, 2026CWE-346EPSS 0.22%

Overview

CVE-2026-114121 is a medium-severity vulnerability. It was published on October 21, 2026 and has a CVSS 3.1 base score of 5.4 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/electron/electron/commit/25057643bf6d9a20bad69e45707551ccf546f5ceGitHubgithub.com/electron/electron/commit/8aa5414f73792ed3b2e3f9ab6391b1832e6dc2c3GitHubgithub.com/electron/electron/commit/92a783952891805f2f82f344c40a6917b98a7d98GitHubgithub.com/electron/electron/commit/e0a20d5277b567aea8603f8e9852a4341407a586GitHubgithub.com/electron/electron/commit/e3a400911084537bce7380ffea8af939572ce8ddGitHubgithub.com/electron/electron/pull/53682GitHubgithub.com/electron/electron/pull/53696GitHubgithub.com/electron/electron/pull/53697GitHubgithub.com/electron/electron/pull/53698GitHubgithub.com/electron/electron/pull/53699

How CyberStrike helps

Frequently asked questions

What is CVE-2026-114121?

CVE-2026-114121 is a medium-severity vulnerability. It was published on October 21, 2026 and has a CVSS 3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-114121?

This vulnerability has a CVSS 3.1 base score of 5.4, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-114121?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-114121?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-114121 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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