CVE WatchOct 8, 2026

CVE-2026-70603

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.6, 40.9.0, 41.1.1, and

CVSS

6.0

Medium

EPSS

0.1%

KEV

—

Exploit Today

0-100

Published: Aug 5, 2026 · Last modified: Oct 8, 2026 · CWE-20 · CWE-158

EPSS · 30d

0.1%EPSS · 30 days0.1%

2026-09-142026-10-12

Technical description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.6, 40.9.0, 41.1.1, and 42.0.0-beta.1, shell.openPath() did not reject paths containing embedded null bytes. Apps that perform string-only validation of file paths, for example checking the file extension, before passing them to shell.openPath() could be bypassed, allowing an attacker-controlled path to open a different file than the one that passed validation. Apps are only affected if they pass paths derived from untrusted input to shell.openPath() and rely on string-based validation without a filesystem check. This issue is fixed in versions 39.8.6, 40.9.0, 41.1.1, and 42.0.0-beta.1.

Official references

github.comhttps://github.com/electron/electron/security/advisories/GHSA-5c9j-mhmv-5xgx

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