CVE-2026-70488
Description
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, the sync cleanup endpoint authorized write access to the knowledge base in the URL but then acted on directory and file ids supplied in the request body without checking that those objects belonged to that knowledge base. A user with write access to one knowledge base could delete directories and remove file embeddings from another knowledge base, causing documents to drop out of retrieval results and breaking chat-with-file for targeted documents without disclosing contents. This issue is fixed in 0.11.0.
How to fix
- openwebui open_webui0.11.0 or later
- open-webui0.11.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openwebui open_webui | 0.9.6 ≤ v < 0.11.0 | 0.11.0 |
| open-webuiPyPI | 0.9.6 ≤ v < 0.11.0 | 0.11.0 |
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Attack Surface Management
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