Missing Authorization Affecting open-webui package, versions [0.5.0,0.11.0)
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-2026-70481 (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 in the update_message_by_id and delete_message_by_id handlers when processing standard channels due to insufficient authorization checks. An attacker can modify or delete messages authored by other users by sending crafted requests to the relevant API endpoints while holding write access to the channel. This is only exploitable if channels are enabled by an administrator and the attacker has write access to a standard channel.