CVE-2026-54010

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.

Weakness classification

• security-advisories@github.com: CWE-284

Primary references

• security-advisories@github.com — Exploit, Vendor Advisory, Mitigation
• 134c704f-9b21-4f2e-91b3-4a467353bcc0 — Exploit, Vendor Advisory, Mitigation