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Langflow - Missing Authorization on download_image endpoint

Low

Synopsis

The '/api/v1/files/images/{flow_id}/{file_name}' endpoint does not enforce any authentication or authorization checks, allowing any unauthenticated user to download images belonging to any flow by knowing (or guessing) the flow ID and file name.

Solution

No known solution

Disclosure Timeline

Jan 20, 2026 : Initial contact
Jan 27, 2026 : Second attempt
Feb 04, 2026 : Third attempt
March 23, 2026 : Informed the vendor that, unless we hear back from them, the TRA will be published on Friday, the 27th

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