Missing Authorization Affecting open-webui package, versions [,0.8.11)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published7 Apr 2026
- disclosed1 Apr 2026
- creditTimo Müller
Introduced: 1 Apr 2026
CVE-2026-34222 (opens in a new tab)How to fix?
Upgrade open-webui to version 0.8.11 or higher.
Overview
open-webui is an Open WebUI
Affected versions of this package are vulnerable to Missing Authorization in the Tool Valves endpoint. An attacker can obtain sensitive information, such as API keys for backend systems, by sending GET /api/v1/tools/id/<tool_id>/valves requests using a low-privileged account and a known or easily guessed tool ID.