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Alta

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

  • Publicada: 03.04.2026
  • Actualizado: 11.10.2026 10:22

Impact

Apps that use offscreen rendering and allow child windows via window.open() may be vulnerable to a use-after-free. If the parent offscreen WebContents is destroyed while a child window remains open, subsequent paint frames on the child dereference freed memory, which may lead to a crash or memory corruption.

Apps are only affected if they use offscreen rendering (webPreferences.offscreen: true) and their setWindowOpenHandler permits child windows. Apps that do not use offscreen rendering, or that deny child windows, are not affected.

Workarounds

Deny child window creation from offscreen renderers in your setWindowOpenHandler, or ensure child windows are closed before the parent is destroyed.

Fixed Versions

  • 41.0.0
  • 40.7.0
  • 39.8.1

For more information

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

Software afectado

Haz clic en una tecnología para ver todas sus vulnerabilidades.

PlataformaPaqueteVersiones vulnerablesCorregida en
Paquete de npm electron < 39.8.1, >= 40.0.0-alpha.1, < 40.7.0, >= 41.0.0-alpha.1, < 41.0.0 39.8.1, 40.7.0, 41.0.0

Referencias

Puntuación CVSS 8.1/10
Vector CVSS
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Debilidad (CWE)
CWE-416
Plataforma
npm
Paquete
electron
Publicada
03.04.2026
Actualizado
11.10.2026 10:22

Fuentes y licencias

OSV / GitHub Advisory Database - GHSA-532v-xpq5-8h95 - CC BY 4.0

Historial de vulnerabilidades: electron

Todas las vulnerabilidades publicadas de este paquete (Paquete de npm), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.

Todas (71) en el archivo
Entradas en total
71
Primera → última
10.2017 09.2026
Sin corrección
0
Explotada en ataques
3

Distribución por gravedad

  • Crítica 3
  • Alta 26
  • Media 32
  • Baja 10

Divulgaciones por año

Gravedad:
  1. Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab
    Alta · 8.2 CVE-2026-102673 < 41.10.4, >= 42.0.0-alpha.1, < 42.5.2, >= 43.0.0-alpha.1, < 43.0.0 41.10.4, 42.5.2, 43.0.0
  2. Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions
    Alta · 8.2 CVE-2026-102674 < 41.10.6, >= 42.0.0-alpha.1, < 42.9.2, >= 43.0.0-alpha.1, < 43.4.1, >= 44.0.0-alpha.1, < 44.0.0-beta.5 41.10.6, 42.9.2, 43.4.1, 44.0.0-beta.5
  3. Electron: File and HTTP protocol handlers allow cross-origin reads without corsEnabled
    Alta · 7.4 CVE-2026-102675 < 41.10.6, >= 42.0.0-alpha.1, < 42.9.2, >= 43.0.0-alpha.1, < 43.4.1, >= 44.0.0-alpha.1, < 44.0.0-beta.5 41.10.6, 42.9.2, 43.4.1, 44.0.0-beta.5
  4. Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions
    Alta · 8.3 CVE-2026-102676 < 41.10.6, >= 42.0.0-alpha.1, < 42.9.2, >= 43.0.0-alpha.1, < 43.4.1, >= 44.0.0-alpha.1, < 44.0.0-beta.5 41.10.6, 42.9.2, 43.4.1, 44.0.0-beta.5
  5. Electron: Sandboxed preload code cache can be poisoned by a compromised renderer
    Alta · 7.8 CVE-2026-102677 >= 42.3.3, < 42.10.0, >= 43.0.0-beta.1, < 43.5.0, >= 44.0.0-alpha.1, < 44.0.0-beta.6 42.10.0, 43.5.0, 44.0.0-beta.6
  6. Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path
    Alta · 7.2 CVE-2026-70608 >= 42.0.0-alpha.1, < 42.0.1, >= 40.0.0-alpha.1, < 41.10.3, < 39.8.10 42.0.1, 41.10.3, 39.8.10
  7. Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads
    Alta · 7.4 CVE-2026-70604 >= 42.0.0-alpha.1, < 42.0.0, >= 41.0.0-alpha.1, < 41.4.0, >= 40.0.0-alpha.1, < 40.9.3, < 39.8.10 42.0.0, 41.4.0, 40.9.3, 39.8.10
  8. Electron: Context isolation bypass via Function.prototype.bind hijack
    Alta · 7.5 CVE-2026-70601 < 39.8.9, >= 40.0.0-alpha.1, < 40.9.2, >= 41.0.0-alpha.1, < 41.2.2, >= 42.0.0-alpha.1, < 42.0.0-beta.5 39.8.9, 40.9.2, 41.2.2, 42.0.0-beta.5
  9. Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow
    Crítica CVE-2026-54257 >= 42.3.1, < 42.3.3 42.3.3
  10. Electron: Context Isolation bypass via contextBridge VideoFrame transfer
    Alta · 8.3 CVE-2026-34780 >= 39.0.0-alpha.1, < 39.8.0, >= 40.0.0-alpha.1, < 40.7.0, >= 41.0.0-alpha.1, < 41.0.0-beta.8 39.8.0, 40.7.0, 41.0.0-beta.8
  11. Electron: Use-after-free in offscreen child window paint callback esta entrada
    Alta · 8.1 CVE-2026-34774 < 39.8.1, >= 40.0.0-alpha.1, < 40.7.0, >= 41.0.0-alpha.1, < 41.0.0 39.8.1, 40.7.0, 41.0.0
  12. Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks
    Alta · 7.5 CVE-2026-34771 < 38.8.6, >= 39.0.0-alpha.1, < 39.8.0, >= 40.0.0-alpha.1, < 40.7.0, >= 41.0.0-alpha.1, < 41.0.0-beta.8 38.8.6, 39.8.0, 40.7.0, 41.0.0-beta.8
  13. Electron: Use-after-free in PowerMonitor on Windows and macOS
    Alta · 7.0 CVE-2026-34770 < 38.8.6, >= 39.0.0-alpha.1, < 39.8.1, >= 40.0.0-alpha.1, < 40.8.0, >= 41.0.0-alpha.1, < 41.0.0-beta.8 38.8.6, 39.8.1, 40.8.0, 41.0.0-beta.8
  14. Electron: Renderer command-line switch injection via undocumented commandLineSwitches webPreference
    Alta · 7.7 CVE-2026-34769 < 38.8.6, >= 39.0.0-alpha.1, < 39.8.0, >= 40.0.0-alpha.1, < 40.7.0, >= 41.0.0-alpha.1, < 41.0.0-beta.8 38.8.6, 39.8.0, 40.7.0, 41.0.0-beta.8
  15. electron ASAR Integrity bypass by just modifying the content
    Alta · 7.8 CVE-2024-46992 >= 30.0.0-alpha.1, < 30.0.5, >= 31.0.0-alpha.1, < 31.0.0-beta.1 30.0.5, 31.0.0-beta.1
  16. Electron affected by libvpx's heap buffer overflow in vp8 encoding
    Alta · 8.8 Explotada en ataques CVE-2023-5217 < 22.3.25, >= 24.0.0, < 24.8.5, >= 25.0.0, < 25.8.4, >= 26.0.0, < 26.2.4, >= 27.0.0-alpha.1, < 27.0.0-beta.8 22.3.25, 24.8.5, 25.8.4, 26.2.4, 27.0.0-beta.8
  17. libwebp: OOB write in BuildHuffmanTable
    Alta · 8.8 Explotada en ataques CVE-2023-4863 >= 22.0.0, < 22.3.24, >= 24.0.0, < 24.8.3, >= 25.0.0, < 25.8.1, >= 26.0.0, < 26.2.1, >= 27.0.0-beta.1, < 27.0.0-beta.2 22.3.24, 24.8.3, 25.8.1, 26.2.1, 27.0.0-beta.2
  18. Electron's Content-Secrity-Policy disabling eval not applied consistently in renderers with sandbox disabled
    Alta · 7.5 CVE-2023-23623 >= 22.0.0-beta.1, < 22.0.1, >= 23.0.0-alpha.1, < 23.0.0-alpha.2 22.0.1, 23.0.0-alpha.2
  19. Heap buffer overflow in GPU
    Crítica · 9.6 Explotada en ataques CVE-2022-4135 >= 19.0.0, < 19.1.8 19.1.8
  20. Electron vulnerable to remote command execution
    Alta · 8.1 CVE-2017-12581 < 1.6.8 1.6.8
  21. Unpreventable top-level navigation
    Alta · 7.5 CVE-2020-15174 >= 8.0.0-beta.0, < 8.5.1, >= 9.0.0-beta.0, < 9.3.0, >= 10.0.0-beta.0, < 10.0.1 8.5.1, 9.3.0, 10.0.1
  22. Context isolation bypass via contextBridge in Electron
    Alta · 7.7 CVE-2020-4077 < 7.2.4, >= 8.0.0, < 8.2.4 7.2.4, 8.2.4
  23. Context isolation bypass via leaked cross-context objects in Electron
    Alta · 7.8 CVE-2020-4076 < 7.2.4, >= 8.0.0, < 8.2.4 7.2.4, 8.2.4
  24. Electron webPreferences vulnerability can be used to perform remote code execution
    Alta · 8.1 CVE-2018-15685 >= 1.7.0, < 1.7.16, >= 1.8.0, < 1.8.8, >= 2.0.0, < 2.0.8, >= 3.0.0-beta.1, < 3.0.0-beta.7 1.7.16, 1.8.8, 2.0.8, 3.0.0-beta.7
  25. Chromium Remote Code Execution in electron
    Crítica · 9.8 CVE-2017-16151 < 1.6.14, >= 1.7.0, < 1.7.8 1.6.14, 1.7.8
  26. Electron protocol handler browser vulnerable to Command Injection
    Alta · 8.8 CVE-2018-1000118 < 1.8.2-beta5 1.8.2-beta5
  27. Electron Vulnerable to Code Execution by Re-Enabling Node.js Integration
    Alta · 8.1 CVE-2018-1000136 >= 1.7.0, < 1.7.13, >= 1.8.0, < 1.8.4, >= 2.0.0-beta.1, < 2.0.0-beta.5 1.7.13, 1.8.4, 2.0.0-beta.5
  28. Remote Code Execution in electron
    Alta · 8.8 CVE-2018-1000006 >= 1.7.0, < 1.7.11, >= 1.6.0, < 1.6.16, >= 1.8.0, < 1.8.2-beta.4 1.7.11, 1.6.16, 1.8.2-beta.4
  29. High severity vulnerability that affects electron
    Alta · 7.8 CVE-2016-1202 < 0.33.5 0.33.5

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