Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5, when a renderer calls window.open() with a target name, Electron did not correctly scope the named-window lookup to the opener's browsing context group. A renderer could navigate an existing child window that was opened by a different, unrelated renderer if both used the same target name. If that existing child was created with more permissive webPreferences (via setWindowOpenHandler's overrideBrowserWindowOptions), content loaded by the second renderer inherits those permissions. Apps are only affected if they open multiple top-level windows with differing trust levels and use setWindowOpenHandler to grant child windows elevated webPreferences such as a privileged preload script. Apps that do not elevate child window privileges, or that use a single top-level window, are not affected. Apps that additionally grant nodeIntegration: true or sandbox: false to child windows (contrary to the security recommendations) may be exposed to arbitrary code execution. This vulnerability is fixed in 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS.
    Prior to 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5, when a renderer calls window.open() with a target     name, Electron did not correctly scope the named-window lookup to the opener's browsing context group. A     renderer could navigate an existing child window that was opened by a different, unrelated renderer if     both used the same target name. If that existing child was created with more permissive webPreferences     (via setWindowOpenHandler's overrideBrowserWindowOptions), content loaded by the second renderer inherits     those permissions. Apps are only affected if they open multiple top-level windows with differing trust     levels and use setWindowOpenHandler to grant child windows elevated webPreferences such as a privileged     preload script. Apps that do not elevate child window privileges, or that use a single top-level window,     are not affected. Apps that additionally grant nodeIntegration: true or sandbox: false to child windows     (contrary to the security recommendations) may be exposed to arbitrary code execution. This vulnerability     is fixed in 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5. (CVE-2026-34765)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS.
    Prior to 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5, when a renderer calls window.open() with a target
    name, Electron did not correctly scope the named-window lookup to the opener's browsing context group. A
    renderer could navigate an existing child window that was opened by a different, unrelated renderer if
    both used the same target name. If that existing child was created with more permissive webPreferences
    (via setWindowOpenHandler's overrideBrowserWindowOptions), content loaded by the second renderer inherits
    those permissions. Apps are only affected if they open multiple top-level windows with differing trust
    levels and use setWindowOpenHandler to grant child windows elevated webPreferences such as a privileged
    preload script. Apps that do not elevate child window privileges, or that use a single top-level window,
    are not affected. Apps that additionally grant nodeIntegration: true or sandbox: false to child windows
    (contrary to the security recommendations) may be exposed to arbitrary code execution. This vulnerability
    is fixed in 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5. (CVE-2026-34765)

ID	Name	Product	Family	Severity
305568	Linux Distros Unpatched Vulnerability : CVE-2026-34765	Nessus	Misc.	high
439964	SCA: security update for electron (GHSA-f3pv-wv63-48x8)	Tenable Cloud Security	SCA Checks	high
439964	SCA: security update for electron (GHSA-f3pv-wv63-48x8)	Tenable Self-Hosted Container Security	SCA Checks	high

Detections

Analytics

CVE-2026-34765

high

Tenable Plugins

high

high

high