Medium severity · published May 15, 2026
CVE-2026-45397
Open WebUI: Unauthenticated RAG Configuration Disclosure
5.3
CVSS
0.8%
EPSS
No
On KEV
Description
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.5, GET /api/v1/retrieval/ returns live RAG pipeline configuration to any unauthenticated HTTP client. No Authorization header, cookie, or API key is required. Every adjacent endpoint on the same router (/embedding, /config) is correctly guarded by get_admin_user making this a targeted omission. This vulnerability is fixed in 0.9.5.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 55% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
open-webui · open-webui
< 0.9.5 · source: vendor
OW
Open Webui · Openwebui
before 0.9.5 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-45397
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-45397
Exploit
https://github.com/open-webui/open-webui/security/advisories/GHSA-65pg-qhhw-mxwg
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