CVE-2026-33687
HighSummary
Sharp to framework zarządzania treścią stworzony dla Laravel jako pakiet. Wersje przed 9.20.0 zawierają podatność w punkcie przesyłania plików, która pozwala uwierzytelnionym użytkownikom na obejście wszystkich ograniczeń dotyczących typów plików.
Risk Assessment
Organizacja może być narażona na ataki, w których złośliwi użytkownicy mogą przesyłać nieautoryzowane pliki, co może prowadzić do wykonania złośliwego kodu na serwerze.
Recommendation
Zaleca się aktualizację do wersji 9.20.0 lub nowszej oraz zapewnienie, że dysk pamięci używany do przesyłania plików w Sharp jest ściśle prywatny.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS