AUGUST 16, 2026
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Case File

CVE-2026-70603

MEDIUM · CVSS 6 EPSS 0.10% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-05 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

The vulnerability affects Electron applications that use the shell.openPath() function, allowing attackers to bypass string-only validation of file paths containing embedded null bytes. This could lead to unauthorized file access if applications accept untrusted input without proper filesystem checks. Developers of Electron-based applications should prioritize updating to versions 39.8.6, 40.9.0, 41.1.1, or 42.0.0-beta.1 to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-70603
Severity
MEDIUM
CVSS
6
EPSS
0.10%
Java

Original NVD 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.