CVE-2026-34780
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| electron | electron | >= 39.0.0-alpha.1, < 39.8.0 | affected |
| electron | electron | >= 40.0.0-alpha.1, < 40.7.0 | affected |
| electron | electron | >= 41.0.0-alpha.1, < 41.0.0-beta.8 | affected |
Weaknesses
- CWE-668: CWE-668: Exposure of Resource to Wrong Sphere
- CWE-1188: CWE-1188: Insecure Default Initialization of Resource
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
electron: Electron: Context Isolation bypass via VideoFrame object transfer
Additional References
- https://access.redhat.com/security/cve/CVE-2026-34780
- https://bugzilla.redhat.com/show_bug.cgi?id=2455020
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34780.json
References
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