CVE-2026-29070
Open WebUI has unauthorized deletion of knowledge files
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
9th
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.6, an access control check is missing when deleting a file from a knowledge base. The only check being done is that the user has write access to the knowledge base (or is admin), but NOT that the file actually belongs to this knowledge base. It is thus possible to delete arbitrary files from arbitrary knowledge bases (as long as one knows the file id). Version 0.8.6 patches the issue.
| CWE | CWE-862 |
| Vendor | open-webui |
| Product | open-webui |
| Published | Mar 26, 2026 |
| Last Updated | Mar 30, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Affected Versions
open-webui / open-webui
< 0.8.6