CVE-2026-44566 Open WebUI: Arbitrary File Upload and Path Traversal
Attackers can upload malicious files to arbitrary filesystem locations via unsanitized filenames, potentially leading to code execution or data modification.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-44566?
CVE-2026-44566 is a high-severity path traversal vulnerability in Openwebui Open Webui, published on 15 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.1.124, when attaching files to a promp, the name of the file is derived from the original HTTP upload request and is not validated or sanitized. This allows for users to upload files with names containing dot-segments in the file path and traverse out of the intended uploads directory. Effectively, users can upload files anywhere on the filesystem the user running the web server has permission. This vulnerability is fixed in 0.1.124.
Which versions are affected by CVE-2026-44566?
3 open source packages ship an affected version, including open-webui. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
open-webui PyPI | All versions | 0.1.124 |
open-webui PyPI | All versions | 0.1.124 |
open-webui PyPI | All versions | 0.1.124 |
Products include Openwebui Open Webui.
How do I fix CVE-2026-44566?
Upgrade open-webui to 0.1.124 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-44566 being exploited?
There is no known exploitation of CVE-2026-44566 in the wild and no public exploit code.
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-9pgh-j74g-qj6m, PYSEC-2026-2717.