Authorization Bypass Through User-Controlled Key Affecting open-webui package, versions [,0.9.0)
Threat Intelligence
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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Start learning- Snyk IDSNYK-PYTHON-OPENWEBUI-16725580
- published17 May 2026
- disclosed14 May 2026
- creditsavvaki
Introduced: 14 May 2026
NewCVE-2026-45349 (opens in a new tab)How to fix?
Upgrade open-webui to version 0.9.0 or higher.
Overview
open-webui is an Open WebUI
Affected versions of this package are vulnerable to Authorization Bypass Through User-Controlled Key through the chat_completion process. An attacker can access and continue another user's conversation by supplying a known Chat ID in API requests. This is only exploitable if both users have access to the same model and the attacker knows the target user's Chat ID.