GHSA-pcw7-5633-82vv · 深刻度： medium · エコシステム： npm — Strapi Upload Plugin MIME Validation Bypass via Content API
Strapi is an open source headless content management system. In Strapi versions prior to 5.33.3, the Upload plugin's Content API endpoints did not enforce the administrator-configured MIME type restrictions (`plugin.upload.security.allowedTypes` and `deniedTypes`). The same restrictions were correctly enforced on the Admin Panel upload path. The upload plugin's `enforceUploadSecurity` security check was invoked in the admin upload controller but was missing from the Content API controller. The Content API handlers `uploadFiles` and `replaceFile` (and the `upload` wrapper that dispatches to them) called the underlying upload service directly, bypassing both the magic-byte MIME detection and the configured allow/deny lists. An authenticated user with the Content API upload permission could therefore upload file types the administrator had explicitly disallowed, including HTML and SVG content. In deployments serving uploaded files from the same origin as the admin panel (default), an attacker could upload an HTML or SVG file that, when opened directly by an admin, executed JavaScript in the admin origin, enabling admin-session hijack and authenticated administrative actions against the admin API. The patch in version 5.33.3 introduces a shared `prepareUploadRequest` helper that wraps `enforceUploadSecurity` and is called from both the Content API and admin upload controllers, ensuring identical security policy enforcement on every upload entry point.
総合評価: CVE-2026-22707 は低リスク（24.6/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 0.19%、9 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 | 0.04% | 0.19% | +0.16% |
| 2 | 2026-05-16 | 0.06% | 0.04% | -0.02% |
| 3 | 2026-05-15 | — | 0.06% | — |
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 |
|---|---|---|---|---|---|---|
| 5.3 | 4.0 | MEDIUM |
|
— | — | [email protected] |
| 5.4 | 3.1 | MEDIUM |
|
2.8 | 2.5 | [email protected] |
GHSA-pcw7-5633-82vv · 深刻度： medium · エコシステム： npm — Strapi Upload Plugin MIME Validation Bypass via Content API
| URL | タグ |
|---|---|
| https://github.com/strapi/strapi/security/advisories/GHSA-pcw7-5633-82vv | Vendor Advisory |