Open WebUI: Forged chat-file link allows cross-user file read and deletion

SummaryOpen WebUI v0.9.5 lets an authenticated user attach arbitrary fileid values to their own chat message without checking whether they own or can read those files. If the attacker then shares that chat and grants themselves read access, hasaccesstofile treats the victim file as accessible...

CVE-2026-54010 Open WebUI: Forged chat-file link allows cross-user file read and deletion

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI lets an authenticated user attach arbitrary fileid values to their own chat message without checking whether they own or can read those files. If the attacker then shares...

PT-2026-50482

Name of the Vulnerable Software and Affected Versions Open WebUI versions prior to 0.9.6 Description An authenticated user can attach arbitrary file id values to their own chat messages because the system fails to verify if the user owns or has read access to those files. By sharing the chat and...