GHSA-f3pv-wv63-48x8 · 深刻度: medium · エコシステム: npm — Electron: Named window.open targets not scoped to the opener's browsing context
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5, when a renderer calls window.open() with a target name, Electron did not correctly scope the named-window lookup to the opener's browsing context group. A renderer could navigate an existing child window that was opened by a different, unrelated renderer if both used the same target name. If that existing child was created with more permissive webPreferences (via setWindowOpenHandler's overrideBrowserWindowOptions), content loaded by the second renderer inherits those permissions. Apps are only affected if they open multiple top-level windows with differing trust levels and use setWindowOpenHandler to grant child windows elevated webPreferences such as a privileged preload script. Apps that do not elevate child window privileges, or that use a single top-level window, are not affected. Apps that additionally grant nodeIntegration: true or sandbox: false to child windows (contrary to the security recommendations) may be exposed to arbitrary code execution. This vulnerability is fixed in 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5.
総合評価: CVE-2026-34765 は低リスク(31.8/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.30%、21 パーセンタイル) 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.02% | 0.30% | +0.28% |
| 2 | 2026-04-21 | 0.05% | 0.02% | -0.03% |
| 3 | 2026-04-08 | — | 0.05% | — |
EPSS の全履歴 (全 3 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 6.0 | 3.1 | MEDIUM |
|
1.8 | 3.7 | [email protected] |
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
GHSA-f3pv-wv63-48x8 · 深刻度: medium · エコシステム: npm — Electron: Named window.open targets not scoped to the opener's browsing context
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-34765 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| electronjs | electron | <= 39.8.4 | cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* |
| electronjs | electron | >= 40.0.0, <= 40.8.4 | cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* |
| electronjs | electron | >= 41.0.0, < 41.1.0 | cpe:2.3:a:electronjs:electron:*:*:*:*:*:node.js:*:* |
| electronjs | electron | 41.2.0 | cpe:2.3:a:electronjs:electron:41.2.0:*:*:*:*:node.js:*:* |
| electronjs | electron | 42.0.0 | cpe:2.3:a:electronjs:electron:42.0.0:alpha1:*:*:*:node.js:*:* |
| electronjs | electron | 42.0.0 | cpe:2.3:a:electronjs:electron:42.0.0:alpha2:*:*:*:node.js:*:* |
| electronjs | electron | 42.0.0 | cpe:2.3:a:electronjs:electron:42.0.0:alpha3:*:*:*:node.js:*:* |
| electronjs | electron | 42.0.0 | cpe:2.3:a:electronjs:electron:42.0.0:alpha4:*:*:*:node.js:*:* |
| URL | タグ |
|---|---|
| https://github.com/electron/electron/security/advisories/GHSA-f3pv-wv63-48x8 | Vendor Advisory |