CVE-2026-34777

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, when an iframe requests fullscreen, pointerLock, keyboardLock, openExternal, or media permissions, the origin passed to...

CVE-2026-34777 Electron: Incorrect origin passed to permission request handler for iframe requests

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, when an iframe requests fullscreen, pointerLock, keyboardLock, openExternal, or media permissions, the origin passed to...

CVE-2026-34777 Electron: Incorrect origin passed to permission request handler for iframe requests

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, when an iframe requests fullscreen, pointerLock, keyboardLock, openExternal, or media permissions, the origin passed to...

CVE-2026-34776 Electron: Out-of-bounds read in second-instance IPC on macOS and Linux

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, on macOS and Linux, apps that call app.requestSingleInstanceLock were vulnerable to an out-of-bounds heap read when parsing a crafted...

CVE-2026-34776

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, on macOS and Linux, apps that call app.requestSingleInstanceLock were vulnerable to an out-of-bounds heap read when parsing a crafted...

CVE-2026-34776 Electron: Out-of-bounds read in second-instance IPC on macOS and Linux

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, on macOS and Linux, apps that call app.requestSingleInstanceLock were vulnerable to an out-of-bounds heap read when parsing a crafted...

CVE-2026-34776 Electron: Out-of-bounds read in second-instance IPC on macOS and Linux

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, on macOS and Linux, apps that call app.requestSingleInstanceLock were vulnerable to an out-of-bounds heap read when parsing a crafted...

CVE-2026-34775 Electron: nodeIntegrationInWorker not correctly scoped in shared renderer processes

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0, the nodeIntegrationInWorker webPreference was not correctly scoped in all configurations. In certain process-sharing scenarios, workers...

CVE-2026-34775

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0, the nodeIntegrationInWorker webPreference was not correctly scoped in all configurations. In certain process-sharing scenarios, workers...

CVE-2026-34775 Electron: nodeIntegrationInWorker not correctly scoped in shared renderer processes

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0, the nodeIntegrationInWorker webPreference was not correctly scoped in all configurations. In certain process-sharing scenarios, workers...

EUVD-2026-18949

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0, the nodeIntegrationInWorker webPreference was not correctly scoped in all configurations. In certain process-sharing scenarios, workers...

CVE-2026-34775 Electron: nodeIntegrationInWorker not correctly scoped in shared renderer processes

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.4, 40.8.4, and 41.0.0, the nodeIntegrationInWorker webPreference was not correctly scoped in all configurations. In certain process-sharing scenarios, workers...

CVE-2026-34775

Electron: nodeIntegrationInWorker was not correctly scoped in shared renderer processes. Affected versions prior to 38.8.6, 39.8.4, 40.8.4, and 41.0.0 may allow workers in frames with nodeIntegrationInWorker: false to gain Node.js integration in certain process-sharing scenarios. This could enabl...

CVE-2026-34774 Electron: Use-after-free in offscreen child window paint callback

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 39.8.1, 40.7.0, and 41.0.0, apps that use offscreen rendering and allow child windows via window.open may be vulnerable to a use-after-free. If the parent offscreen WebContent...

CVE-2026-34774

Electron is affected when apps use offscreen rendering (webPreferences.offscreen: true) and allow child windows via window.open(). In such cases, if the parent offscreen WebContents is destroyed while a child window remains open, subsequent paint frames on the child can dereference freed memory, ...

CVE-2026-34774 Electron: Use-after-free in offscreen child window paint callback

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 39.8.1, 40.7.0, and 41.0.0, apps that use offscreen rendering and allow child windows via window.open may be vulnerable to a use-after-free. If the parent offscreen WebContent...

CVE-2026-34773 Electron: Registry key path injection in app.setAsDefaultProtocolClient on Windows

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, on Windows, app.setAsDefaultProtocolClientprotocol did not validate the protocol name before writing to the registry. Apps that pass...

CVE-2026-34773 Electron: Registry key path injection in app.setAsDefaultProtocolClient on Windows

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, on Windows, app.setAsDefaultProtocolClientprotocol did not validate the protocol name before writing to the registry. Apps that pass...

CVE-2026-34773 Electron: Registry key path injection in app.setAsDefaultProtocolClient on Windows

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.1, and 41.0.0, on Windows, app.setAsDefaultProtocolClientprotocol did not validate the protocol name before writing to the registry. Apps that pass...

CVE-2026-34773

CVE-2026-34773 (Electron, Windows): The issue arises when calling app.setAsDefaultProtocolClient() with a protocol name derived from external input; the protocol name is written to HKCU\Software\Classes\ without proper validation, risking hijack of existing protocol handlers. Affected Electron ve...