Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks_CVE-2026-34771

{
    "lastseen": "",
    "description": "Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8, apps that register an asynchronous session.setPermissionRequestHandler() may be vulnerable to a use-after-free when handling fullscreen, pointer-lock, or keyboard-lock permission requests. If the requesting frame navigates or the window closes while the permission handler is pending, invoking the stored callback dereferences freed memory, which may lead to a crash or memory corruption. Apps that do not set a permission request handler, or whose handler responds synchronously, are not affected. This issue has been patched in versions 38.8.6, 39.8.0, 40.7.0, and 41.0.0-beta.8.",
    "published": "2026-04-03T23:47:23.171Z",
    "modified": "2026-04-08T03:55:37.519Z",
    "type": "cve",
    "title": "Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks",
    "source": "GitHub_M",
    "references": "https://github.com/electron/electron/security/advisories/GHSA-8337-3p73-46f4",
    "id": "CVE-2026-34771",
    "bulletinFamily": "",
    "cwe": [
        "CWE-416"
    ],
    "cvelist": null,
    "sourceData": "electron electron < 38.8.6\nelectron electron >= 39.0.0-alpha.1, < 39.8.0\nelectron electron >= 40.0.0-alpha.1, < 40.7.0\nelectron electron >= 41.0.0-alpha.1, < 41.0.0-beta.8",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "electron",
    "version": "< 38.8.6",
    "vendor": "electron",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}