Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path
Impact
A sandboxed iframe without the allow-popups keyword could still open a new window (or trigger setWindowOpenHandler) with no user interaction, because new-window navigations taking the OpenURL path did not apply the iframe sandbox popup restriction.
Apps that embed untrusted content in sandboxed iframes and rely on the absence of allow-popups to prevent window creation are affected. Apps that deny window creation in setWindowOpenHandler, or that do not embed untrusted content in sandboxed iframes, are not affected.
Workarounds
Return { action: 'deny' } from setWindowOpenHandler for any content you do not trust, rather than relying on the iframe sandbox alone.
Fixed Versions
42.0.141.10.339.8.10
For more information
If you have any questions or comments about this advisory, email Electron at security@electronjs.org
Software afectado
Haz clic en una tecnología para ver todas sus vulnerabilidades.
| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | electron | >= 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 |
Referencias
- https://github.com/electron/electron/security/advisories/GHSA-9f4c-93c8-jc8g
- https://github.com/electron/electron/pull/51437
- https://github.com/electron/electron/pull/51438
- https://github.com/electron/electron/pull/51439
- https://github.com/electron/electron/commit/3ff23c52ab364a0afc6ab5bd7851291d3159de57
- https://github.com/electron/electron/commit/57cbe329c4ae8aab5ac5ebdcb588adc9a11de0d3
- https://github.com/electron/electron/commit/68cf8b7d9122260f6b534a69a82c701a56cf159f
- https://github.com/electron/electron
- https://github.com/electron/electron/releases/tag/v39.8.10
- https://github.com/electron/electron/releases/tag/v41.10.3
- https://github.com/electron/electron/releases/tag/v42.0.1
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N- Debilidad (CWE)
CWE-1021, CWE-693- Plataforma
- npm
- Paquete
electron- Publicada
- 05.08.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-9f4c-93c8-jc8g - 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.
- 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
- 2017: 1
- 2018: 5
- 2019: 0
- 2020: 6
- 2021: 2
- 2022: 7
- 2023: 6
- 2024: 0
- 2025: 3
- 2026: 41
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