# CVE-2026-59225: Open WebUI: Arena task endpoints can bypass underlying model access controls

> Authenticated users can bypass model access controls via task endpoints to access restricted underlying models in Open WebUI.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 9 Jul 2026
- **Updated:** 9 Jul 2026
- **Also known as:** GHSA-m3qf-58wf-w979, PYSEC-2026-3601

## What is CVE-2026-59225?

CVE-2026-59225 is a medium-severity missing authorization vulnerability in Openwebui Open Webui, published on 9 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.8.12 before 0.10.0, an authenticated non-admin user with read access to an arena wrapper model can reach a restricted underlying model through task endpoints such as /api/v1/tasks/moa/completions. The normal chat route resolves arena models before the final chat dispatch and therefore re-checks the selected underlying model. The task routes call utils.chat.generate_chat_completion() directly. In that direct path, arena fallback resolution happens after the wrapper access check and then recurses with bypass_filter=True, skipping the selected submodel's access check. This issue is fixed in version 0.10.0.

Weakness: CWE-862 (Missing Authorization)

## Which versions are affected by CVE-2026-59225?

3 open source packages ship an affected version, including open-webui. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `open-webui` | PyPI | From 0.8.12 | 0.10.0 |
| `open-webui` | PyPI | From 0.8.12 | 0.10.0 |
| `open-webui` | PyPI | From 0.8.12 | 0.10.0 |

Products: Openwebui Open Webui.

## How do I fix CVE-2026-59225?

Upgrade open-webui to 0.10.0 or later.

## Is CVE-2026-59225 being exploited?

There is no known exploitation of CVE-2026-59225 in the wild and no public exploit code.

## Other vulnerabilities in Openwebui Open Webui

- [CVE-2026-44551](https://insights.sbomify.com/CVE-2026-44551/): Open WebUI: LDAP Empty Password Authentication Bypass (critical 9.1)
- [CVE-2026-56400](https://insights.sbomify.com/CVE-2026-56400/): open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation (critical 9.0)
- [CVE-2024-8017](https://insights.sbomify.com/CVE-2024-8017/): Cross-site Scripting (XSS) in open-webui/open-webui (critical 9.0)
- [CVE-2026-45672](https://insights.sbomify.com/CVE-2026-45672/): Open WebUI: Jupyter code execution works despite `ENABLE_CODE_EXECUTION=false` — feature gate bypassed (high 8.8)
- [CVE-2026-87995](https://insights.sbomify.com/CVE-2026-87995/): Open WebUI: Same-origin XSS to account takeover via terminal port-preview iframe hardcoding allow-same-origin (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-59225 and fix it if it is affected.

What it is: CVE-2026-59225 is a medium-severity missing authorization vulnerability in Openwebui Open Webui, published on 9 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-59225 in the wild and no public exploit code.

Affected packages and fixed versions:
- open-webui (PyPI): affected from 0.8.12; fixed in 0.10.0
- open-webui (PyPI): affected from 0.8.12; fixed in 0.10.0
- open-webui (PyPI): affected from 0.8.12; fixed in 0.10.0

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-59225/ (Markdown: https://insights.sbomify.com/CVE-2026-59225/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-59225
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-59225
- OSV: https://osv.dev/vulnerability/CVE-2026-59225

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-59225/
Summaries are generated and may contain mistakes; the official description above is the record.