CVE-2026-34780
Electron: Context Isolation bypass via contextBridge VideoFrame transfer
Description
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From versions 39.0.0-alpha.1 to before 39.8.0, 40.0.0-alpha.1 to before 40.7.0, and 41.0.0-alpha.1 to before 41.0.0-beta.8, apps that pass VideoFrame objects (from the WebCodecs API) across the contextBridge are vulnerable to a context isolation bypass. An attacker who can execute JavaScript in the main world (for example, via XSS) can use a bridged VideoFrame to gain access to the isolated world, including any Node.js APIs exposed to the preload script. Apps are only affected if a preload script returns, resolves, or passes a VideoFrame object to the main world via contextBridge.exposeInMainWorld(). Apps that do not bridge VideoFrame objects are not affected. This issue has been patched in versions 39.8.0, 40.7.0, and 41.0.0-beta.8.
INFO
Published Date :
April 4, 2026, 1:16 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 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c |
Solution
- Update Electron to version 39.8.0 or later.
- Update Electron to version 40.7.0 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-2026-34780.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-34780 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-2026-34780
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-2026-34780 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-2026-34780 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. Desde las versiones 39.0.0-alpha.1 hasta antes de la 39.8.0, 40.0.0-alpha.1 hasta antes de la 40.7.0, y 41.0.0-alpha.1 hasta antes de la 41.0.0-beta.8, las aplicaciones que pasan objetos VideoFrame (de la API WebCodecs) a través del contextBridge son vulnerables a una omisión del aislamiento de contexto. Un atacante que puede ejecutar JavaScript en el mundo principal (por ejemplo, a través de XSS) puede usar un VideoFrame puenteado para obtener acceso al mundo aislado, incluyendo cualquier API de Node.js expuesta al script de precarga. Las aplicaciones solo se ven afectadas si un script de precarga devuelve, resuelve o pasa un objeto VideoFrame al mundo principal a través de contextBridge.exposeInMainWorld(). Las aplicaciones que no puentean objetos VideoFrame no se ven afectadas. Este problema ha sido parcheado en las versiones 39.8.0, 40.7.0 y 41.0.0-beta.8. -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jul. 15, 2026
Action Type Old Value New Value Changed Affected [{'cpes': ['cpe:/a:redhat:podman_desktop:1'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Podman Desktop', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:podman_desktop:0'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Podman Desktop - Tech Preview', 'defaultStatus': 'affected'}] [{'cpes': ['cpe:/a:redhat:podman_desktop:1'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Podman Desktop', 'packageName': 'podman-desktop-macos-1-0', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:podman_desktop:1'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Podman Desktop', 'packageName': 'podman-desktop-windows-1-0', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:podman_desktop:0'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Podman Desktop - Tech Preview', 'packageName': 'rhdesktop/rh-podman-desktop-ext-openshift-local-rhel10', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/a:redhat:podman_desktop:1'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Podman Desktop', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:podman_desktop:0'], 'vendor': 'Red Hat', 'product': 'Red Hat Build of Podman Desktop - Tech Preview', 'defaultStatus': 'affected'}] Added CVSS V3.1 AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H Added CWE CWE-501 Added Reference https://access.redhat.com/security/cve/CVE-2026-34780 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2455020 Added Reference https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34780.json -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-34780', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-04-07T00:00:00+00:00'} -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'electron', 'product': 'electron', 'versions': [{'status': 'affected', 'version': '>= 39.0.0-alpha.1, < 39.8.0'}, {'status': 'affected', 'version': '>= 40.0.0-alpha.1, < 40.7.0'}, {'status': 'affected', 'version': '>= 41.0.0-alpha.1, < 41.0.0-beta.8'}]}] -
Initial Analysis by [email protected]
Apr. 14, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N 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 from (including) 39.0.0 up to (excluding) 39.8.0 *cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* versions from (including) 40.0.0 up to (excluding) 40.7.0 Added Reference Type GitHub, Inc.: https://github.com/electron/electron/security/advisories/GHSA-jfqg-hf23-qpw2 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. From versions 39.0.0-alpha.1 to before 39.8.0, 40.0.0-alpha.1 to before 40.7.0, and 41.0.0-alpha.1 to before 41.0.0-beta.8, apps that pass VideoFrame objects (from the WebCodecs API) across the contextBridge are vulnerable to a context isolation bypass. An attacker who can execute JavaScript in the main world (for example, via XSS) can use a bridged VideoFrame to gain access to the isolated world, including any Node.js APIs exposed to the preload script. Apps are only affected if a preload script returns, resolves, or passes a VideoFrame object to the main world via contextBridge.exposeInMainWorld(). Apps that do not bridge VideoFrame objects are not affected. This issue has been patched in versions 39.8.0, 40.7.0, and 41.0.0-beta.8. Added CVSS V3.1 AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H Added CWE CWE-668 Added CWE CWE-1188 Added Reference https://github.com/electron/electron/security/advisories/GHSA-jfqg-hf23-qpw2