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Publish Advisories
GHSA-8337-3p73-46f4 GHSA-9wfr-w7mm-pc7f GHSA-jjp3-mq3x-295m
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‎advisories/github-reviewed/2026/04/GHSA-8337-3p73-46f4/GHSA-8337-3p73-46f4.json‎

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{
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"schema_version": "1.4.0",
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"id": "GHSA-8337-3p73-46f4",
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"modified": "2026-04-03T02:40:24Z",
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"published": "2026-04-03T02:40:24Z",
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"aliases": [
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"CVE-2026-34771"
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],
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"summary": "Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks",
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"details": "### Impact\nApps 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.\n\nApps that do not set a permission request handler, or whose handler responds synchronously, are not affected.\n\n### Workarounds\nRespond to permission requests synchronously, or deny fullscreen, pointer-lock, and keyboard-lock requests if an asynchronous flow is required.\n\n### Fixed Versions\n* `41.0.0-beta.8`\n* `40.7.0`\n* `39.8.0`\n* `38.8.6`\n\n### For more information\nIf there are any questions or comments about this advisory, please email [security@electronjs.org](mailto:security@electronjs.org)",
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"severity": [
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{
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"type": "CVSS_V3",
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"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
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}
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],
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"affected": [
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{
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"package": {
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"ecosystem": "npm",
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"name": "electron"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0"
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},
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{
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"fixed": "38.8.6"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "npm",
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"name": "electron"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "39.0.0-alpha.1"
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},
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{
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"fixed": "39.8.0"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "npm",
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"name": "electron"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "40.0.0-alpha.1"
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},
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{
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"fixed": "40.7.0"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "npm",
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"name": "electron"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "41.0.0-alpha.1"
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},
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{
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"fixed": "41.0.0-beta.8"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"type": "WEB",
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"url": "https://github.com/electron/electron/security/advisories/GHSA-8337-3p73-46f4"
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},
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{
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"type": "PACKAGE",
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"url": "https://github.com/electron/electron"
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}
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],
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"database_specific": {
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"cwe_ids": [
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"CWE-416"
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],
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"severity": "HIGH",
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"github_reviewed": true,
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"github_reviewed_at": "2026-04-03T02:40:24Z",
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"nvd_published_at": null
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}
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}

‎advisories/github-reviewed/2026/04/GHSA-9wfr-w7mm-pc7f/GHSA-9wfr-w7mm-pc7f.json‎

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{
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"schema_version": "1.4.0",
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"id": "GHSA-9wfr-w7mm-pc7f",
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"modified": "2026-04-03T02:39:15Z",
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"published": "2026-04-03T02:39:15Z",
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"aliases": [
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"CVE-2026-34769"
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],
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"summary": "Electron: Renderer command-line switch injection via undocumented commandLineSwitches webPreference",
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"details": "### Impact\nAn undocumented `commandLineSwitches` webPreference allowed arbitrary switches to be appended to the renderer process command line. Apps that construct `webPreferences` by spreading untrusted configuration objects may inadvertently allow an attacker to inject switches that disable renderer sandboxing or web security controls.\n\nApps are only affected if they construct `webPreferences` from external or untrusted input without an allowlist. Apps that use a fixed, hardcoded `webPreferences` object are not affected.\n\n### Workarounds\nDo not spread untrusted input into `webPreferences`. Use an explicit allowlist of permitted preference keys when constructing `BrowserWindow` or `webContents` options from external configuration.\n\n### Fixed Versions\n* `41.0.0-beta.8`\n* `40.7.0`\n* `39.8.0`\n* `38.8.6`\n\n### For more information\nIf there are any questions or comments about this advisory, send an email to [security@electronjs.org](mailto:security@electronjs.org)",
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"severity": [
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{
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"type": "CVSS_V3",
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"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H"
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}
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],
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"affected": [
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{
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"package": {
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"ecosystem": "npm",
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"name": "electron"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0"
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},
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{
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"fixed": "38.8.6"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "npm",
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"name": "electron"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "39.0.0-alpha.1"
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},
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{
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"fixed": "39.8.0"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "npm",
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"name": "electron"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "40.0.0-alpha.1"
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},
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{
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"fixed": "40.7.0"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "npm",
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"name": "electron"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "41.0.0-alpha.1"
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},
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{
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"fixed": "41.0.0-beta.8"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"type": "WEB",
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"url": "https://github.com/electron/electron/security/advisories/GHSA-9wfr-w7mm-pc7f"
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},
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{
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"type": "PACKAGE",
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"url": "https://github.com/electron/electron"
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}
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],
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"database_specific": {
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"cwe_ids": [
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"CWE-88",
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"CWE-912"
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],
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"severity": "HIGH",
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"github_reviewed": true,
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"github_reviewed_at": "2026-04-03T02:39:15Z",
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"nvd_published_at": null
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}
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}

‎advisories/github-reviewed/2026/04/GHSA-jjp3-mq3x-295m/GHSA-jjp3-mq3x-295m.json‎

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{
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"schema_version": "1.4.0",
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"id": "GHSA-jjp3-mq3x-295m",
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"modified": "2026-04-03T02:39:52Z",
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"published": "2026-04-03T02:39:52Z",
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"aliases": [
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"CVE-2026-34770"
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],
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"summary": "Electron: Use-after-free in PowerMonitor on Windows and macOS",
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"details": "### Impact\nApps that use the `powerMonitor` module may be vulnerable to a use-after-free. After the native `PowerMonitor` object is garbage-collected, the associated OS-level resources (a message window on Windows, a shutdown handler on macOS) retain dangling references. A subsequent session-change event (Windows) or system shutdown (macOS) dereferences freed memory, which may lead to a crash or memory corruption.\n\nAll apps that access `powerMonitor` events (`suspend`, `resume`, `lock-screen`, etc.) are potentially affected. The issue is not directly renderer-controllable.\n\n### Workarounds\nThere are no app side workarounds, you must update to a patched version of Electron.\n\n### Fixed Versions\n* `41.0.0-beta.8`\n* `40.8.0`\n* `39.8.1`\n* `38.8.6`\n\n### For more information\nIf there are any questions or comments about this advisory, please email [security@electronjs.org](mailto:security@electronjs.org)",
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"severity": [
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{
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"type": "CVSS_V3",
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"score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H"
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}
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],
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"affected": [
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{
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"package": {
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"ecosystem": "npm",
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"name": "electron"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0"
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},
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{
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"fixed": "38.8.6"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "npm",
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"name": "electron"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "39.0.0-alpha.1"
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},
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{
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"fixed": "39.8.1"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "npm",
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"name": "electron"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "40.0.0-alpha.1"
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},
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{
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"fixed": "40.8.0"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "npm",
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"name": "electron"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "41.0.0-alpha.1"
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},
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{
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"fixed": "41.0.0-beta.8"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"type": "WEB",
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"url": "https://github.com/electron/electron/security/advisories/GHSA-jjp3-mq3x-295m"
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},
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{
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"type": "PACKAGE",
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"url": "https://github.com/electron/electron"
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}
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],
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"database_specific": {
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"cwe_ids": [
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"CWE-416"
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],
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"severity": "HIGH",
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"github_reviewed": true,
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"github_reviewed_at": "2026-04-03T02:39:52Z",
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"nvd_published_at": null
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}
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}

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