GHSA-r3r2-35v9-v238 · 深刻度: high · エコシステム: pip — Briefcase: Windows MSI Installer Privilege Escalation via Insecure Directory Permissions
Briefcase is a tool for converting a Python project into a standalone native application. Starting in version 0.3.0 and prior to version 0.3.26, if a developer uses Briefcase to produce an Windows MSI installer for a project, and that project is installed for All Users (i.e., per-machine scope), the installation process creates an directory that inherits all the permissions of the parent directory. Depending on the location chosen by the installing user, this may allow a low privilege but authenticated user to replace or modify the binaries installed by the application. If an administrator then runs the altered binary, the binary will run with elevated privileges. The problem is caused by the template used to generate the WXS file for Windows projects. It was fixed in the templates used in Briefcase 0.3.26, 0.4.0, and 0.4.1. Re-running `briefcase create` on your Briefcase project will result in the updated templates being used. As a workaround, the patch can be added to any existing Briefcase .wxs file generated by Briefcase 0.3.24 or later.
総合評価: CVE-2026-33430 は低リスク(30.4/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 0.13%、3 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 | 0.01% | 0.13% | +0.12% |
| 2 | 2026-03-27 | — | 0.01% | — |
EPSS の全履歴 (全 2 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 |
|---|---|---|---|---|---|---|
| 7.3 | 3.1 | HIGH |
|
1.3 | 5.9 | [email protected] |
GHSA-r3r2-35v9-v238 · 深刻度: high · エコシステム: pip — Briefcase: Windows MSI Installer Privilege Escalation via Insecure Directory Permissions
| URL | タグ |
|---|---|
| https://github.com/beeware/briefcase-windows-VisualStudio-template/pull/85 | Issue Tracking Patch |
| https://github.com/beeware/briefcase-windows-app-template/pull/86 | Issue Tracking Patch |
| https://github.com/beeware/briefcase/issues/2759 | Issue Tracking |
| https://github.com/beeware/briefcase/security/advisories/GHSA-r3r2-35v9-v238 | Mitigation Patch Vendor Advisory |