Description
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 file_id 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, has_access_to_file() treats the victim file as accessible through the shared chat, and the file endpoints read or delete the victim file. This vulnerability is fixed in 0.9.6.
Problem types
CWE-284: Improper Access Control
CWE-639: Authorization Bypass Through User-Controlled Key
CWE-862: Missing Authorization
Product status
References
github.com/...-webui/security/advisories/GHSA-vrhc-3fr6-pc3c
github.com/...-webui/security/advisories/GHSA-vrhc-3fr6-pc3c