Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2026-34770

Electron: Use-after-free in PowerMonitor on Windows and macOS
Back to all
CVE

CVE-2026-34770

Electron: Use-after-free in PowerMonitor on Windows and macOS

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.8
  • 40.8.0
  • 39.8.1
  • 38.8.6

For more information

If there are any questions or comments about this advisory, please email security@electronjs.org

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7
-
3.1
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
C
H
U
7
-
3.1
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Related Resources

No items found.

References

https://github.com/electron/electron/security/advisories/GHSA-jjp3-mq3x-295m, https://nvd.nist.gov/vuln/detail/CVE-2026-34770, https://github.com/electron/electron

Severity

7

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7
EPSS Probability
0.00017%
EPSS Percentile
0.04078%
Introduced Version
0,41.0.0-alpha.1,40.0.0-alpha.2,39.0.0-alpha.1,3.0.0-beta.1
Fix Available
38.8.6,41.0.0-beta.8,40.8.0,39.8.1

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading