CVE-2026-85693

Chatbot UI contains an authorization bypass vulnerability in the retrieval endpoint that allows authenticated attackers to access private file content belonging to other users by supplying arbitrary file UUIDs. The endpoint uses a service-role Supabase client that bypasses row-level security and...

Open WebUI: shared-chat branch ignores access_type, allowing unauthorized file deletion

SummaryAny authenticated user can permanently delete files owned by other users via DELETE /api/v1/files/id when the target file is referenced in any shared chat. The hasaccesstofile authorization gate unconditionally grants access through its shared-chat branch. It checks neither the requesting...

EUVD-2026-16482

Open WebUI's processfilesbatch endpoint missing ownership check, allows unauthorized file overwrite...

Insecure Direct Object Reference (IDOR)

pretix is vulnerable to Insecure Direct Object Reference IDOR. The vulnerability is due to insufficient authorization checks on file UUIDs, which allows an attacker to access sensitive files of other users by manipulating or guessing valid UUID values...