{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:*",
            "extracted_events": [
              {
                "introduced": "39.0.0"
              },
              {
                "fixed": "39.8.0"
              },
              {
                "introduced": "40.0.0"
              },
              {
                "fixed": "40.7.0"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0abda746eabbca48066f7425c5db5dba53bb37f5"
            },
            {
              "fixed": "69c8cbf259da0f84e9c1db04958516a68f7170aa"
            },
            {
              "introduced": "35b8855913a75fbb6ee8b1465388c033535da634"
            },
            {
              "fixed": "1598b9116daef641157c557153dc5d3b809fdf13"
            }
          ],
          "repo": "https://github.com/electron/electron",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-jfqg-hf23-qpw2"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-1188",
      "CWE-668"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34780.json"
  },
  "details": "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.",
  "id": "CVE-2026-34780",
  "modified": "2026-07-27T03:56:15.840765889Z",
  "published": "2026-04-04T00:02:02.224Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34780.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/security/cve/CVE-2026-34780"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34780.json"
    },
    {
      "type": "ADVISORY",
      "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": "REPORT",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455020"
    }
  ],
  "schema_version": "1.8.0",
  "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"
}