{
    "document": {
        "category": "csaf_base",
        "csaf_version": "2.0",
        "distribution": {
            "tlp": {
                "label": "WHITE"
            }
        },
        "lang": "en",
        "notes": [
            {
                "category": "legal_disclaimer",
                "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
            }
        ],
        "publisher": {
            "category": "coordinator",
            "contact_details": "cert@ncsc.nl",
            "name": "National Cyber Security Centre",
            "namespace": "https://www.ncsc.nl/"
        },
        "title": "CVE-2026-34780",
        "tracking": {
            "current_release_date": "2026-04-03T03:43:09.158789Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-34780",
            "initial_release_date": "2026-04-03T03:41:43.505823Z",
            "revision_history": [
                {
                    "date": "2026-04-03T03:41:43.505823Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-04-03T03:41:52.426655Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                }
            ],
            "status": "interim",
            "version": "2"
        }
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-34780",
            "cwe": {
                "id": "CWE-1188",
                "name": "Initialization of a Resource with an Insecure Default"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "### 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)",
                    "title": "github - https://api.github.com/advisories/GHSA-jfqg-hf23-qpw2"
                },
                {
                    "category": "other",
                    "text": "4.1",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "Is related to an uncommon cwe id, Is related to CWE-668 (Exposure of Resource to Wrong Sphere)",
                    "title": "NCSC Score top increasing factors"
                }
            ],
            "references": [
                {
                    "category": "external",
                    "summary": "Source - github",
                    "url": "https://api.github.com/advisories/GHSA-jfqg-hf23-qpw2"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://github.com/electron/electron/security/advisories/GHSA-jfqg-hf23-qpw2"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://github.com/advisories/GHSA-jfqg-hf23-qpw2"
                }
            ],
            "title": "CVE-2026-34780"
        }
    ]
}