Vulnerability-Lookup

GHSA-JFQG-HF23-QPW2

Vulnerability from github – Published: 2026-04-03 02:46 – Updated: 2026-04-06 23:11

Summary

Electron: Context Isolation bypass via contextBridge VideoFrame transfer

Details

Impact

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.

Workarounds

Do not pass VideoFrame objects across contextBridge. If an app needs to transfer video frame data, serialize it to an ArrayBuffer or ImageBitmap before bridging.

Fixed Versions

41.0.0-beta.8
40.7.0
39.8.0

For more information

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

Severity ?

8.3 (High)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "39.0.0-alpha.1"
            },
            {
              "fixed": "39.8.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "40.0.0-alpha.1"
            },
            {
              "fixed": "40.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "electron"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "41.0.0-alpha.1"
            },
            {
              "fixed": "41.0.0-beta.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34780"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1188",
      "CWE-668"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-03T02:46:56Z",
    "nvd_published_at": "2026-04-04T01:16:39Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nApps 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.\n\nApps 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.\n\n### Workarounds\nDo not pass `VideoFrame` objects across `contextBridge`. If an app needs to transfer video frame data, serialize it to an `ArrayBuffer` or `ImageBitmap` before bridging.\n\n### Fixed Versions\n* `41.0.0-beta.8`\n* `40.7.0`\n* `39.8.0`\n\n### For more information\nIf there are any questions or comments about this advisory, please email [security@electronjs.org](mailto:security@electronjs.org)",
  "id": "GHSA-jfqg-hf23-qpw2",
  "modified": "2026-04-06T23:11:50Z",
  "published": "2026-04-03T02:46:56Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/electron/electron/security/advisories/GHSA-jfqg-hf23-qpw2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34780"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/electron/electron"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Electron: Context Isolation bypass via contextBridge VideoFrame transfer"
}

CVE-2026-34780 (GCVE-0-2026-34780)

Vulnerability from cvelistv5 – Published: 2026-04-04 00:02 – Updated: 2026-04-08 03:55

Title

Electron: Context Isolation bypass via contextBridge VideoFrame transfer

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.

Severity ?

8.4 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

CWE

CWE-668 - Exposure of Resource to Wrong Sphere
CWE-1188 - Insecure Default Initialization of Resource

Assigner

GitHub_M

References

URL

Tags

https://github.com/electron/electron/security/adv…

x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	electron	electron	Affected: >= 39.0.0-alpha.1, < 39.8.0 Affected: >= 40.0.0-alpha.1, < 40.7.0 Affected: >= 41.0.0-alpha.1, < 41.0.0-beta.8

Show details on NVD website