Medium severity · published May 15, 2026
CVE-2026-44560
Open WebUI: Unauthorized File and Knowledge Base Content Access via RAG Vector Search
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, the type: "file" (non-full-context), type: "text" with collection_name, and bare collection_name/collection_names paths in the get_sources_from_items function perform vector store queries without any authorization check, allowing users to extract content from files and knowledge bases they do not have access to. This vulnerability is fixed in 0.9.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 30% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
open-webui · open-webui
< 0.9.0 · source: vendor
OW
Open Webui · Openwebui
before 0.9.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-44560
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-44560
Exploit
https://github.com/open-webui/open-webui/security/advisories/GHSA-h36f-rqpx-j5wx
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