CVE-2026-34770
Electron: Use-after-free in PowerMonitor on Windows and macOS
Description
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.
INFO
Published Date :
April 4, 2026, 12:16 a.m.
Last Modified :
July 24, 2026, 10:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update Electron to version 38.8.6 or later.
- Update Electron to version 39.8.1 or later.
- Update Electron to version 40.8.0 or later.
- Update Electron to version 41.0.0-beta.8 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-34770.
| URL | Resource |
|---|---|
| https://github.com/electron/electron/security/advisories/GHSA-jjp3-mq3x-295m | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-34770 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-34770
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-34770 vulnerability anywhere in the article.
-
Daily CyberSecurity
Breaking the App Shell: Five New Electron Vulnerabilities Shatter Context Isolation
The Electron framework—the powerhouse behind heavyweights like Visual Studio Code and countless other cross-platform desktop applications —has released a series of important patches to address five si ... Read more
The following table lists the changes that have been made to the
CVE-2026-34770 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 24, 2026
Action Type Old Value New Value Added Translation Title: electron, Description: Electron es un framework para escribir aplicaciones de escritorio multiplataforma usando JavaScript, HTML y CSS. Antes de las versiones 38.8.6, 39.8.1, 40.8.0 y 41.0.0-beta.8, las aplicaciones que usan el módulo powerMonitor pueden ser vulnerables a un uso después de liberación. Después de que el objeto nativo PowerMonitor es recolectado por el recolector de basura, los recursos asociados a nivel del SO (una ventana de mensaje en Windows, un gestor de apagado en macOS) retienen referencias colgantes. Un evento posterior de cambio de sesión (Windows) o un apagado del sistema (macOS) desreferencia la memoria liberada, lo que puede llevar a un fallo o corrupción de memoria. Todas las aplicaciones que acceden a los eventos de powerMonitor (suspender, reanudar, pantalla de bloqueo, etc.) están potencialmente afectadas. El problema no es directamente controlable por el renderizador. Este problema ha sido parcheado en las versiones 38.8.6, 39.8.1, 40.8.0 y 41.0.0-beta.8. -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'electron', 'product': 'electron', 'versions': [{'status': 'affected', 'version': '< 38.8.6'}, {'status': 'affected', 'version': '>= 39.0.0-alpha.1, < 39.8.1'}, {'status': 'affected', 'version': '>= 40.0.0-alpha.1, < 40.8.0'}, {'status': 'affected', 'version': '>= 41.0.0-alpha.1, < 41.0.0-beta.8'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-34770', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-04-07T00:00:00+00:00'} -
Initial Analysis by [email protected]
Apr. 22, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Added CPE Configuration OR *cpe:2.3:a:electronjs:electron:41.0.0:alpha1:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:41.0.0:alpha2:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:41.0.0:alpha3:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:41.0.0:alpha4:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:41.0.0:alpha5:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:41.0.0:alpha6:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:41.0.0:beta1:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:41.0.0:beta2:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:41.0.0:beta3:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:41.0.0:beta4:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:41.0.0:beta5:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:41.0.0:beta6:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:41.0.0:beta7:*:*:*:node.js:*:* *cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* versions up to (excluding) 38.8.6 *cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* versions from (including) 39.0.0 up to (excluding) 39.8.1 *cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* versions from (including) 40.0.0 up to (excluding) 40.8.0 Added Reference Type GitHub, Inc.: https://github.com/electron/electron/security/advisories/GHSA-jjp3-mq3x-295m Types: Vendor Advisory -
New CVE Received by [email protected]
Apr. 04, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Added CWE CWE-416 Added Reference https://github.com/electron/electron/security/advisories/GHSA-jjp3-mq3x-295m