Missing Authorization Affecting open-webui package, versions [0.8.8,0.11.0)
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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- published9 Aug 2026
- disclosed4 Aug 2026
- creditUnknown
Introduced: 4 Aug 2026
NewCVE-2026-70487 (opens in a new tab)How to fix?
Upgrade open-webui to version 0.11.0 or higher.
Overview
open-webui is an Open WebUI
Affected versions of this package are vulnerable to Missing Authorization via the chat completion, chat completed, and chat action endpoints when an inline model definition is used with attached knowledge metadata. An attacker can access the indexed content of another user's or group's file by supplying a known file id in the request. This is only exploitable if the attacker is an authenticated user, knows the target file's id, and the request uses native function calling with the builtin_tools capability enabled.