Open WebUI Arbitrary File Write, Delete via Path Traversal

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

8.1 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS

• CVE-2026-44565: 0.45% estimated exploitation activity in the next 30 days; percentile 39.46 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

CONFIDENTIAL Vulnerability Disclosure Analysis Documentation ----------------------------------------------- Vulnerability Details --------------------- 1. Discoverer: Taylor Pennington of KoreLogic, Inc. 2. Date Submitted: June 11, 2024 3. Title: Open WebUI Arbitrary File Write, Delete via Path Traversal 4. High-level Summary: Attacker controlled files can be uploaded to arbitrary locations on the web server's filesystem by abusing a path traversal vulnerability. After the file is written, it is deleted. 5. Affected Vendor: Open WebUI 6. Affected Product(s): Open WebUI (Formerly Ollama WebUI) 7. Affected Version(s): 0.1.105 8. Platform/OS: Debian GNU/Linux 12 (bookworm) 9. Vector: HTTP web interface 10. CWE: 22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') 11. Technical Analysis: When attaching files to a prompt by clicking the plus sign (+) on the left of the message input box when using the Open WebUI HTTP interface, the file is uploaded to a…

Published by the source

11 May 2026, 14:03 UTC

Last modified by the source

13 Jul 2026, 16:43 UTC

Source last checked

26 Oct 2026, 13:41 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-j3fw-wc48-29g3

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-j3fw-wc48-29g3

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# Patch Next advisory brief: CVE-2026-44565

Advisory: Open WebUI Arbitrary File Write, Delete via Path Traversal
IDs: CVE-2026-44565, GHSA-j3fw-wc48-29g3
Record: https://patchnext.com/advisories/cve-2026-44565 (revision 2, source checked 26 Oct 2026, 13:41 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.1)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: open-webui 0.6.10. A vendor fix does not mean a deployment is fixed.

## Affected components
- PyPI open-webui: affected <= 0.6.9; fixed in 0.6.10

## Suggested inspection (read-only)
- `python -m pip show open-webui`: prints the installed version. Run with the environment that serves production active.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on open-webui.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-j3fw-wc48-29g3 (OSV record GHSA-j3fw-wc48-29g3 lists affected ranges: PyPI open-webui >=0 <0.6.10 (fixed))
- Verified: https://github.com/advisories/GHSA-j3fw-wc48-29g3 (GitHub-reviewed advisory GHSA-j3fw-wc48-29g3 lists affected ranges: PyPI open-webui >=0 <=0.6.9)

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