CVE-2026-34769

The record

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, an undocumented commandLineSwitches webPreference allowed arbitrary switches to be appended to the renderer process command line. Apps that construct webPreferences by spreading untrusted configuration objects may inadvertently allow an attacker to inject switches that disable renderer sandboxing or web security controls. Apps are only affected if they construct webPreferences from external or untrusted input without an allowlist. Apps that use a fixed, hardcoded webPreferences object are not affected. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8.

Affected packages

Related vulnerabilities

• GHSA-9wfr-w7mm-pc7f Electron: Renderer command-line switch injection via undocumented commandLineSwitches… Same vulnerability
• CVE-2026-54257 Electron is a framework for writing cross-platform desktop applications using JavaScript… Also affects electron
• GHSA-q6m5-f73j-m9mc Electron: Buffer performs incorrect byte length calculations resulting in heap buffer… Also affects electron
• CVE-2026-34781 Electron is a framework for writing cross-platform desktop applications using JavaScript… Also affects electron
• CVE-2026-34765 Electron is a framework for writing cross-platform desktop applications using JavaScript… Also affects electron
• GHSA-f37v-82c4-4x64 Electron: Crash in clipboard.readImage() on malformed clipboard image data Also affects electron
• GHSA-f3pv-wv63-48x8 Electron: Named window.open targets not scoped to the opener's browsing context Also affects electron
• CVE-2026-34764 Electron is a framework for writing cross-platform desktop applications using JavaScript… Also affects electron