CVE-2026-34780
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS.
Impact
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 packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | electron | >= 39.0.0-alpha.1, < 39.8.0 | 39.8.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Electronjs | Electron | from 39.0.0 before 39.8.0 from 40.0.0 before 40.7.0 Version 41.0.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-jfqg-hf23-qpw2
- https://github.com/electron/electron/security/advisories/GHSA-jfqg-hf23-qpw2
- https://nvd.nist.gov/vuln/detail/CVE-2026-34780
- 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