Incorrect Authorization Affecting open-webui package, versions [0.9.6,0.11.0)
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-2026-70488 (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 Incorrect Authorization through the sync_knowledge_cleanup handler in the backend, which processes directory and file IDs from the request body without verifying their association with the specified knowledge base. An attacker can remove directories and file embeddings from knowledge bases they do not control by supplying valid directory or file IDs for other knowledge bases. This is only exploitable if the attacker has write access to at least one knowledge base and can obtain the target's directory or file ID, typically as a collaborator on a shared knowledge base.