An unrestricted file upload vulnerability in the Add New Assets function of Strapi v4.1.12 allows attackers to execute arbitrary code via a crafted file.

** DISPUTED ** An unrestricted file upload vulnerability in the Add New Assets function of Strapi 4.1.12 allows attackers to conduct XSS attacks via a crafted PDF file. NOTE: the project documentation suggests that a user with the Media Library "Create (upload)" permission is supposed to be able to upload PDF files containing JavaScript, and that all files in a public assets folder are accessible to the outside world (unless the filename begins with a dot character). The administrator can choose to allow only image, video, and audio files (i.e., not PDF) if desired.

https://docs.strapi.io/dev-docs/configurations/public-assets [No Types Assigned]

https://docs.strapi.io/user-docs/users-roles-permissions/configuring-administrator-roles [No Types Assigned]

https://github.com/strapi/strapi/blob/d9277d616b4478a3839e79e47330a4aaf167a2f1/packages/core/content-type-builder/admin/src/components/AllowedTypesSelect/index.js#L14 [No Types Assigned]

https://github.com/strapi/strapi/blob/d9277d616b4478a3839e79e47330a4aaf167a2f1/packages/core/upload/admin/src/components/MediaLibraryInput/index.js#L33 [No Types Assigned]