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CVE Vulnerability Details :
CVE-2026-45349
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-15 May, 2026 | 19:20
Updated At-15 May, 2026 | 19:20
Rejected At-
▼CVE Numbering Authority (CNA)
Open WebUI: Broken Access Control for Completions API

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a user just needs to use the API endpoint: /api/chat/completions with their own API key (generated in OWUI) and the Chat ID of another user to continue the conversation of the other user. This vulnerability is fixed in 0.9.0.

Affected Products
Vendor
open-webui
Product
open-webui
Versions
Affected
  • < 0.9.0
Problem Types
TypeCWE IDDescription
CWECWE-639CWE-639: Authorization Bypass Through User-Controlled Key
Type: CWE
CWE ID: CWE-639
Description: CWE-639: Authorization Bypass Through User-Controlled Key
Metrics
VersionBase scoreBase severityVector
3.17.1HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Version: 3.1
Base score: 7.1
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/open-webui/open-webui/security/advisories/GHSA-gfm2-xm6c-37qc
x_refsource_CONFIRM
Hyperlink: https://github.com/open-webui/open-webui/security/advisories/GHSA-gfm2-xm6c-37qc
Resource:
x_refsource_CONFIRM
Details not found