CVE-2026-48768

TypeBot (versions ≤ 3.16.1) exposes an unauthenticated generate-upload-url API (/api/blocks/file-input/v3/generate-upload-url) that uses unsanitized fileName to derive public S3 keys and issues presigned PUT URLs that do not bind Content-Type. This allows anonymous users of a published bot with a...

CVE-2026-48768 TypeBot: Unauthenticated arbitrary s3 object write in generate-upload-url via unsanitized fileName

TypeBot is a chatbot builder tool. In versions 3.16.1 and earlier, POST /api/blocks/file-input/v3/generate-upload-url is unauthenticated and uses unsanitized fileName input to construct public/ S3 object keys, while issuing presigned PUT URLs that do not bind Content-Type. As a result, any...