GHSA-fr76-5637-w3g9 · 深刻度: high · エコシステム: composer — Sharp has Unrestricted File Upload via Client-Controlled Validation Rules
Sharp is a content management framework built for Laravel as a package. Versions prior to 9.20.0 contain a vulnerability in the file upload endpoint that allows authenticated users to bypass all file type restrictions. The upload endpoint within the `ApiFormUploadController` accepts a client-controlled `validation_rule` parameter. This parameter is directly passed into the Laravel validator without sufficient server-side enforcement. By intercepting the request and sending `validation_rule[]=file`, an attacker can completely bypass all MIME type and file extension restrictions. This issue has been addressed in version 9.20.0 by removing the client-controlled validation rules and strictly defining upload rules server-side. As a workaround, ensure that the storage disk used for Sharp uploads is strictly private. Under default configurations, an attacker cannot directly execute uploaded PHP files unless a public disk configuration is explicitly used.
総合評価: CVE-2026-33687 は中リスク(49.3/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 0.51%、39 パーセンタイル) 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
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% | 0.51% | +0.46% |
| 2 | 2026-03-27 | — | 0.04% | — |
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 |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
GHSA-fr76-5637-w3g9 · 深刻度: high · エコシステム: composer — Sharp has Unrestricted File Upload via Client-Controlled Validation Rules
| URL | タグ |
|---|---|
| https://github.com/code16/sharp/pull/714 | Issue Tracking Patch |
| https://github.com/code16/sharp/releases/tag/v9.20.0 | Product |
| https://github.com/code16/sharp/security/advisories/GHSA-fr76-5637-w3g9 | Vendor Advisory |
| https://laravel.com/docs/13.x/filesystem | Third Party Advisory |