Electron: Use-after-free in PowerMonitor on Windows and macOS
Published 3 Apr 2026 · Updated 6 Apr 2026
Affected packages
- Affected
- <38.8.6
- Fixed in
- 38.8.6
npm install electron@38.8.6- Affected
- >=39.0.0-alpha.1 <39.8.1
- Fixed in
- 39.8.1
npm install electron@39.8.1- Affected
- >=40.0.0-alpha.1 <40.8.0
- Fixed in
- 40.8.0
npm install electron@40.8.0- Affected
- >=41.0.0-alpha.1 <41.0.0-beta.8
- Fixed in
- 41.0.0-beta.8
npm install electron@41.0.0-beta.8Details
Impact
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.
Workarounds
There are no app side workarounds, you must update to a patched version of Electron.
Fixed Versions
41.0.0-beta.840.8.039.8.138.8.6
For more information
If there are any questions or comments about this advisory, please email [security@electronjs.org](mailto:security@electronjs.org)
Is GHSA-jjp3-mq3x-295m in any of your client repos?
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References
Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.