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CVE-2026-102677

7.8 · HIGH

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

Published Sep 29, 2026electronjsCWE-20EPSS 0.10%

Overview

CVE-2026-102677 is a high-severity vulnerability affecting electronjs electron. It was published on September 29, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From 42.3.3 until 42.10.0, 43.5.0, and 44.0.0-beta.6, Electron's sandboxed preload code cache did not verify that a cached entry matched the preload it was served for. A compromised renderer could write attacker-controlled cache data and cause Electron to reuse it for a later load, executing the renderer's code in the more privileged preload context. The issue affects applications that load untrusted content. This issue is fixed in versions 42.10.0, 43.5.0, and 44.0.0-beta.6.

Remediation

Check the references section for vendor advisories and patches from electronjs. Update electron to the latest patched version. 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.

Affected products

VendorProductVersionsStatus
electronjselectron42.3.3Affected

References

GitHubgithub.com/electron/electron/commit/000453e399bd1dee5e86376cdd9ece5fc071e601GitHubgithub.com/electron/electron/commit/25ba8be57c65a83d8c14ebb8aa37693df17a04f3GitHubgithub.com/electron/electron/commit/c38d6fd68756f04647ea857bdb6a2abec332e217GitHubgithub.com/electron/electron/pull/52480GitHubgithub.com/electron/electron/releases/tag/v42.10.0GitHubgithub.com/electron/electron/releases/tag/v43.5.0GitHubgithub.com/electron/electron/releases/tag/v44.0.0-beta.6GitHubgithub.com/electron/electron/security/advisories/GHSA-qmv3-fv6v-rmhq

How CyberStrike helps

Frequently asked questions

What is CVE-2026-102677?

CVE-2026-102677 is a high-severity vulnerability affecting electronjs electron. It was published on September 29, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-102677?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-102677?

Check the references section for vendor advisories and patches from electronjs. Update electron to the latest patched version. 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-2026-102677?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-102677 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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