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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- published17 May 2026
- disclosed14 May 2026
- creditInar1Dev
Introduced: 14 May 2026
NewCVE-2026-45671 (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 in the has_access_to_file process. An attacker can permanently delete files owned by other users, as well as read or modify their contents, by leveraging access to file UUIDs obtained through shared knowledge bases and exploiting insufficient authorization checks in shared chat scenarios. This is only exploitable if the target file is referenced in any shared chat and the attacker has a valid authenticated account.