CVE-2026-45301 Open WebUI: Missing permission check in files API allows authenticated users to list, access and delete every uploaded file
Authenticated users can list, access, and delete all uploaded files due to missing permission checks in the files API.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-45301?
CVE-2026-45301 is a high-severity missing authorization vulnerability in Openwebui Open Webui, published on 15 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.3.16, a missing permission check in all files related API endpoints allows any authenticated user to list, access and delete every file uploaded by every user to the platform. This vulnerability is fixed in 0.3.16.
Weakness: CWE-284
Which versions are affected by CVE-2026-45301?
3 open source packages ship an affected version, including open-webui. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
open-webui PyPI | All versions | 0.3.16 |
open-webui PyPI | All versions | 0.3.16 |
open-webui PyPI | All versions | 0.3.16 |
Products include Openwebui Open Webui.
How do I fix CVE-2026-45301?
Upgrade open-webui to 0.3.16 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-45301 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45301 exists.
Other vulnerabilities in Openwebui Open Webui
- CVE-2026-44551 Open WebUI: LDAP Empty Password Authentication Bypass
- CVE-2026-56400 open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation
- CVE-2024-8017 Cross-site Scripting (XSS) in open-webui/open-webui
- CVE-2026-45672 Open WebUI: Jupyter code execution works despite `ENABLE_CODE_EXECUTION=false` — feature gate bypassed
- CVE-2026-87995 Open WebUI: Same-origin XSS to account takeover via terminal port-preview iframe hardcoding allow-same-origin
Sources
Also known as GHSA-r8wh-8m7r-fh33, PYSEC-2026-2753.