Vulnerabilities in pkg:npm/electron
PACKAGECVE-2026-102672 is a MODERATE (CVSS 6.7) local race condition vulnerability (CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition) affecting Electron libraries in the npm ecosystem. The issue involves local race condition in squirrel.mac update installation on macos. Remediation is available by upgrading affected packages to version 39.8.10, 41.10.5, 42.0.0-beta.2.
pkg:npm/electron
Vulnerability advisories affecting package pkg:npm/electron. Select an advisory below to view technical details or fixes.
| Advisory ID | CVE / NVD | Severity | Summary |
|---|---|---|---|
| GHSA-vv43-5jgx-7qv8 | CVE-2026-102672 | MODERATE | Electron: Local race condition in Squirrel.Mac update installation on macOS |
| GHSA-hq2x-r82h-9wj4 | CVE-2026-102673 | HIGH | Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab |
| GHSA-gr2m-v5gq-v685 | CVE-2026-102674 | HIGH | Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions |
| GHSA-j84w-jfhq-vhvj | CVE-2026-102675 | HIGH | Electron: File and HTTP protocol handlers allow cross-origin reads without corsEnabled |
| GHSA-9qh4-3jw8-366w | CVE-2026-102676 | HIGH | Electron: <webview> can enable Node.js integration in Web Workers despite embedder restrictions |
| GHSA-qmv3-fv6v-rmhq | CVE-2026-102677 | HIGH | Electron: Sandboxed preload code cache can be poisoned by a compromised renderer |
| GHSA-p2rr-rvmm-c5fp | CVE-2026-70612 | MODERATE | Electron: Sandboxed iframes can launch external protocol handlers |
| GHSA-f2r8-jv7c-xqmp | CVE-2026-70611 | MODERATE | Electron: DevTools embedder handler executes arbitrary files via shell open |
| GHSA-ff2p-hmqr-hxm4 | CVE-2026-70610 | MODERATE | Electron: contextBridge object copy honors prototype setters |
| GHSA-4f78-qhmw-8j8m | CVE-2026-70609 | MODERATE | Electron: DevTools JavaScript Injection via Unsanitized Dock State Parameter |
| GHSA-9f4c-93c8-jc8g | CVE-2026-70608 | HIGH | Electron: Sandboxed iframe can bypass the allow-popups restriction via the OpenURL navigation path |
| GHSA-v93f-fgjr-hjrj | CVE-2026-70607 | MODERATE | Electron: window.open features string controls some window options considered privileged |
| GHSA-r4w5-6pfg-jxp5 | CVE-2026-70606 | MODERATE | Electron: ProtocolResponse.url reuses the default session cache instead of the registering session |
| GHSA-v64r-4m7r-3mvq | CVE-2026-70605 | MODERATE | Electron: HTTP redirect followed into local file loader |
| GHSA-v3j7-r9gq-3gjw | CVE-2026-70604 | HIGH | Electron: Custom protocol with supportFetchAPI but not corsEnabled allows cross-origin reads |
| GHSA-m55f-7gqj-fr98 | CVE-2026-70602 | MODERATE | Electron: Extension tab APIs operate across session boundaries |
| GHSA-5c9j-mhmv-5xgx | CVE-2026-70603 | MODERATE | Electron: shell.openPath path validation bypass via embedded null byte |
| GHSA-h7rp-cf8h-j98x | CVE-2026-70601 | HIGH | Electron: Context isolation bypass via Function.prototype.bind hijack |
| GHSA-x8rc-wpg4-grpf | CVE-2026-70600 | LOW | Electron: Cross-origin iframe can position native autofill popup |
| GHSA-9pf5-hg6p-4pwp | CVE-2026-70599 | MODERATE | Electron: Permission Check Handler Receives Main Frame Origin Instead of Requesting Iframe Origin |
| GHSA-pfmc-3mgc-p6fp | CVE-2026-70598 | LOW | Electron: Off-screen rendering trusts GPU-supplied geometry over shared-memory size |
| GHSA-jm7p-cc5g-qwxx | CVE-2026-70597 | MODERATE | Electron: Parent process code-sign check is spoofable |
| GHSA-q6m5-f73j-m9mc | CVE-2026-54257 | CRITICAL | Electron: Buffer performs incorrect byte length calculations resulting in heap buffer under/overflow |
| GHSA-f37v-82c4-4x64 | CVE-2026-34781 | LOW | Electron: Crash in clipboard.readImage() on malformed clipboard image data |
| GHSA-f3pv-wv63-48x8 | CVE-2026-34765 | MODERATE | Electron: Named window.open targets not scoped to the opener's browsing context |
| GHSA-8x5q-pvf5-64mp | CVE-2026-34764 | LOW | Electron: Use-after-free in offscreen shared texture release() callback |
| GHSA-jfqg-hf23-qpw2 | CVE-2026-34780 | HIGH | Electron: Context Isolation bypass via contextBridge VideoFrame transfer |
| GHSA-5rqw-r77c-jp79 | CVE-2026-34779 | MODERATE | Electron: AppleScript injection in app.moveToApplicationsFolder on macOS |
| GHSA-xj5x-m3f3-5x3h | CVE-2026-34778 | MODERATE | Electron: Service worker can spoof executeJavaScript IPC replies |
| GHSA-r5p7-gp4j-qhrx | CVE-2026-34777 | MODERATE | Electron: Incorrect origin passed to permission request handler for iframe requests |
| GHSA-3c8v-cfp5-9885 | CVE-2026-34776 | MODERATE | Electron: Out-of-bounds read in second-instance IPC on macOS and Linux |
| GHSA-xwr5-m59h-vwqr | CVE-2026-34775 | MODERATE | Electron: nodeIntegrationInWorker not correctly scoped in shared renderer processes |
| GHSA-532v-xpq5-8h95 | CVE-2026-34774 | HIGH | Electron: Use-after-free in offscreen child window paint callback |
| GHSA-mwmh-mq4g-g6gr | CVE-2026-34773 | MODERATE | Electron: Registry key path injection in app.setAsDefaultProtocolClient on Windows |
| GHSA-9w97-2464-8783 | CVE-2026-34772 | MODERATE | Electron: Use-after-free in download save dialog callback |
| GHSA-8337-3p73-46f4 | CVE-2026-34771 | HIGH | Electron: Use-after-free in WebContents fullscreen, pointer-lock, and keyboard-lock permission callbacks |
| GHSA-jjp3-mq3x-295m | CVE-2026-34770 | HIGH | Electron: Use-after-free in PowerMonitor on Windows and macOS |
| GHSA-9wfr-w7mm-pc7f | CVE-2026-34769 | HIGH | Electron: Renderer command-line switch injection via undocumented commandLineSwitches webPreference |
| GHSA-jfqx-fxh3-c62j | CVE-2026-34768 | LOW | Electron: Unquoted executable path in app.setLoginItemSettings on Windows |
| GHSA-4p4r-m79c-wq3v | CVE-2026-34767 | MODERATE | Electron: HTTP Response Header Injection in custom protocol handlers and webRequest |
| GHSA-9899-m83m-qhpj | CVE-2026-34766 | LOW | Electron: USB device selection not validated against filtered device list |
| GHSA-vmqv-hx8q-j7mg | CVE-2025-55305 | MODERATE | Electron has ASAR Integrity Bypass via resource modification |
| GHSA-j7hp-h8jx-5ppr | CVE-2023-4863 | HIGH | libwebp: OOB write in BuildHuffmanTable |
| GHSA-6r2x-8pq8-9489 | CVE-2024-46993 | MODERATE | Electron vulnerable to Heap Buffer Overflow in NativeImage |
| GHSA-xw5q-g62x-2qjc | CVE-2024-46992 | HIGH | electron ASAR Integrity bypass by just modifying the content |
| GHSA-hvf8-h2qh-37m9 | CVE-2020-26272 | MODERATE | IPC messages delivered to the wrong frame in Electron |
| GHSA-7m48-wc93-9g85 | CVE-2023-44402 | MODERATE | ASAR Integrity bypass via filetype confusion in electron |
| GHSA-qqvq-6xgj-jw8g | CVE-2023-5217 | HIGH | Electron affected by libvpx's heap buffer overflow in vp8 encoding |
| GHSA-7fv9-m79r-j9x8 | CVE-2017-12581 | HIGH | Electron vulnerable to remote command execution |
| GHSA-4w88-rjj3-x7wp | CVE-2017-16151 | CRITICAL | Chromium Remote Code Execution in electron |
| GHSA-8xwg-wv7v-4vqp | CVE-2018-1000136 | HIGH | Electron Vulnerable to Code Execution by Re-Enabling Node.js Integration |
| GHSA-7x97-j373-85x5 | CVE-2023-39956 | MODERATE | Electron vulnerable to out-of-package code execution when launched with arbitrary cwd |
| GHSA-p7v2-p9m8-qqg7 | CVE-2023-29198 | MODERATE | Electron context isolation bypass via nested unserializable return value |
| GHSA-gxh7-wv9q-fwfr | CVE-2023-23623 | HIGH | Electron's Content-Secrity-Policy disabling eval not applied consistently in renderers with sandbox disabled |
| GHSA-995f-9x5r-2rcj | CVE-2022-4135 | CRITICAL | Heap buffer overflow in GPU |
| GHSA-p2jh-44qj-pf2v | CVE-2022-36077 | MODERATE | Exfiltration of hashed SMB credentials on Windows via file:// redirect |
| GHSA-6h98-cf9g-vmg2 | CVE-2017-1000424 | MODERATE | Electron vulnerable to URL spoofing via PDFium |
| GHSA-mpjm-v997-c4h4 | CVE-2021-39184 | MODERATE | Electron's sandboxed renderers can obtain thumbnails of arbitrary files through the nativeImage API |
| GHSA-hv9c-qwqg-qj3v | CVE-2018-15685 | HIGH | Electron webPreferences vulnerability can be used to perform remote code execution |
| GHSA-77xc-hjv8-ww97 | CVE-2022-29257 | MODERATE | AutoUpdater module fails to validate certain nested components of the bundle |
| GHSA-mq8j-3h7h-p8g7 | CVE-2022-29247 | LOW | Compromised child renderer processes could obtain IPC access without nodeIntegrationInSubFrames being enabled |
| GHSA-fjqr-fx3f-g4rv | CVE-2018-1000118 | HIGH | Electron protocol handler browser vulnerable to Command Injection |
| GHSA-3p22-ghq8-v749 | CVE-2022-21718 | LOW | Renderers can obtain access to random bluetooth device without permission in Electron |
| GHSA-2q4g-w47c-4674 | CVE-2020-15174 | HIGH | Unpreventable top-level navigation |
| GHSA-gvcj-pfq2-wxj7 | CVE-2016-1202 | HIGH | High severity vulnerability that affects electron |
| GHSA-w222-53c6-c86p | CVE-2018-1000006 | HIGH | Remote Code Execution in electron |
| GHSA-f9mq-jph6-9mhm | CVE-2020-4075 | MODERATE | Arbitrary file read via window-open IPC in Electron |
| GHSA-h9jc-284h-533g | CVE-2020-4077 | HIGH | Context isolation bypass via contextBridge in Electron |
| GHSA-6vrv-94jv-crrg | CVE-2020-15096 | LOW | Context isolation bypass via Promise in Electron |
| GHSA-m93v-9qjc-3g79 | CVE-2020-4076 | HIGH | Context isolation bypass via leaked cross-context objects in Electron |
| GHSA-56pc-6jqp-xqj8 | CVE-2020-15215 | LOW | Context isolation bypass in Electron |
CVE-2026-102672 at a Glance
Security Impact
CVSS: 6.7
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H).
How to Fix CVE-2026-102672
To remediate this vulnerability, upgrade all affected Electron dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
npm install electron@39.8.10
npm install electron@41.10.5
npm install electron@42.0.0-beta.2
Run the following command in your project directory to verify that all resolved dependencies use the patched release:
npm ls electron
How to Check if You Are Affected
To determine whether your Node.js application is affected by CVE-2026-102672, inspect your project dependencies using npm:
npm ls electron
Analyze the terminal output to locate any version of Electron in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 39.8.10), your application is affected.
Note: The npm ls electron command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition, where the product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. In Electron, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2026-102672 Affected Electron Versions
3 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
electron
|
npm |
< 39.8.10
|
39.8.10
|
|
electron
|
npm |
≥ 40.0.0-alpha.1
< 41.10.5
|
41.10.5
|
|
electron
|
npm |
≥ 42.0.0-alpha.1
< 42.0.0-beta.2
|
42.0.0-beta.2
|
References
Frequently Asked Questions
What is CVE-2026-102672?
Which Electron versions are affected?
What version fixes CVE-2026-102672?
Is electron affected?
What is the CVSS score of CVE-2026-102672?
What CWE is associated with CVE-2026-102672?
How can I check npm dependencies for CVE-2026-102672?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-vv43-5jgx-7qv8",
"modified" : "2026-09-29T18:06:59Z",
"published" : "2026-09-29T18:06:59Z",
"aliases" : [ "CVE-2026-102672" ],
"summary" : "Electron: Local race condition in Squirrel.Mac update installation on macOS",
"details" : "### Impact\n\nOn macOS, Electron bundles the Squirrel.Mac auto-update framework, whose privileged `ShipIt` helper performs the final step of an update as root. A local attacker could cause that helper to overwrite a different application's files, as root, instead of the app that started the update. Exploitation requires local access to the machine.\n\nApps are only affected on macOS if they ship Squirrel.Mac-based auto-updates. Apps on other platforms, or that do not use Squirrel.Mac auto-updates, are not affected.\n\n### Workarounds\n\nThere are no app side workarounds, you must update to a patched version of Electron.\n\n### Fixed Versions\n\n* `42.0.0-beta.2`\n* `41.10.5`\n* `39.8.10`\n\n### For more information\n\nIf you have any questions or comments about this advisory, email us at [security@electronjs.org](mailto:security@electronjs.org)",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "npm",
"name" : "electron"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "0"
}, {
"fixed" : "39.8.10"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "electron"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "40.0.0-alpha.1"
}, {
"fixed" : "41.10.5"
} ]
} ]
}, {
"package" : {
"ecosystem" : "npm",
"name" : "electron"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "42.0.0-alpha.1"
}, {
"fixed" : "42.0.0-beta.2"
} ]
} ]
} ],
"references" : [ {
"type" : "WEB",
"url" : "https://github.com/electron/electron/security/advisories/GHSA-vv43-5jgx-7qv8"
}, {
"type" : "WEB",
"url" : "https://github.com/electron/electron/pull/50745"
}, {
"type" : "WEB",
"url" : "https://github.com/electron/electron/commit/01faabfc250801a980fc94d64608046c67fc1cd9"
}, {
"type" : "WEB",
"url" : "https://github.com/electron/electron/commit/15e2928a5c5f01759107b414010e220d90d59cef"
}, {
"type" : "WEB",
"url" : "https://github.com/electron/electron/commit/a0f9ff4cc0340545008424232d49caadd9c0c767"
}, {
"type" : "WEB",
"url" : "https://github.com/electron/electron/commit/b8f25c4cedb2e0f5f475912b709aba19c57c26be"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/electron/electron"
}, {
"type" : "WEB",
"url" : "https://github.com/electron/electron/releases/tag/v39.8.10"
}, {
"type" : "WEB",
"url" : "https://github.com/electron/electron/releases/tag/v41.10.5"
}, {
"type" : "WEB",
"url" : "https://github.com/electron/electron/releases/tag/v42.0.0-beta.2"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-367" ],
"severity" : "MODERATE",
"github_reviewed" : true,
"github_reviewed_at" : "2026-09-29T18:06:59Z",
"nvd_published_at" : null
}
}