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CVE-2026-70612

5.4 · MEDIUM

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

Published Aug 5, 2026CWE-284EPSS 0.43%

Overview

CVE-2026-70612 is a medium-severity vulnerability. It was published on August 5, 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 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.

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/08b9d0a220e267d1a2402a44bdd01a2e9aa320b5GitHubgithub.com/electron/electron/commit/2764e4c35168855f614876051823db4f58a3714aGitHubgithub.com/electron/electron/commit/477dcf7afc6550715f9ec5e6f39ee38e5dd7bf39GitHubgithub.com/electron/electron/commit/c39e3d5687d57434c8d5fe814c5152efd2f631c3GitHubgithub.com/electron/electron/pull/50961GitHubgithub.com/electron/electron/pull/50962GitHubgithub.com/electron/electron/pull/50963GitHubgithub.com/electron/electron/pull/50964GitHubgithub.com/electron/electron/releases/tag/v39.8.8GitHubgithub.com/electron/electron/releases/tag/v40.9.0

How CyberStrike helps

Frequently asked questions

What is CVE-2026-70612?

CVE-2026-70612 is a medium-severity vulnerability. It was published on August 5, 2026 and has a CVSS 3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2026-70612?

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-2026-70612?

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-2026-70612?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-70612 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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