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The Multiple File Upload add-on component 3.1.0 for OutSystems is vulnerable to Unrestricted File Upload. This occurs because file extension and size validations are enforced solely on the client side. An attacker can intercept the upload request and modify a parameter to bypass extension restrictions and upload arbitrary files. NOTE: this is a third-party component that is not supplied or supported by OutSystems.
Reserved 2025-03-11 | Published 2025-05-05 | Updated 2025-05-08 | Assigner mitreCWE-602 Client-Side Enforcement of Server-Side Security
www.outsystems.com/...-overview/200/multiple-file-upload-o11
gist.github.com/...ndrooooo/01090be3023f5e7c7397bb9b1f5505b9
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