CVE-2026-34770
CVE-2026-34770 · Electron: Use-after-free in PowerMonitor on Windows and macOS
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.1, 40.8.0, and 41.0.0-beta.8, apps that use the powerMonitor module may be vulnerable to a use-after-free. After the native PowerMonitor object is garbage-collected, the associated OS-level resources (a message window on Windows, a shutdown handler on macOS) retain dangling references. A subsequent session-change event (Windows) or system shutdown (macOS) dereferences freed memory, which may lead to a crash or memory corruption. All apps that access powerMonitor events (suspend, resume, lock-screen, etc.) are potentially affected. The issue is not directly renderer-controllable. This issue has been patched in versions 38.8.6, 39.8.1, 40.8.0, and 41.0.0-beta.8.
CVSS 7.0 · High · EPSS 0.2% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
electron
- Versions
- < 38.8.6: Affected
- >= 39.0.0-alpha.1, < 39.8.1: Affected
- >= 40.0.0-alpha.1, < 40.8.0: Affected
- >= 41.0.0-alpha.1, < 41.0.0-beta.8: Affected
No fix published
electron npm
- Affected ranges
- SEMVER: < 38.8.6
Update to 38.8.6
electron npm
- Affected ranges
- SEMVER: ≥ 39.0.0-alpha.1, < 39.8.1
Update to 39.8.1
electron npm
- Affected ranges
- SEMVER: ≥ 40.0.0-alpha.1, < 40.8.0
Update to 40.8.0
electron npm
- Affected ranges
- SEMVER: ≥ 41.0.0-alpha.1, < 41.0.0-beta.8
Update to 41.0.0-beta.8