CVE-2026-45365

MEDIUM EPSS 9.2%
Published May 15, 20261mo ago · Modified Jun 17, 20262w ago
5.4 CVSS 3.1
Medium
Find Similar
Published May 15, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.11, an internal-only bypass_filter parameter is exposed on the /openai/chat/completions and /ollama/api/chat HTTP endpoints via FastAPI query string binding, allowing any authenticated user to append ?bypass_filter=true and bypass model access control checks to invoke admin-restricted models. This vulnerability is fixed in 0.8.11.

CVSS Details

Base Score
5.4
Exploitability
2.8
Impact
2.5
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
9.2% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-285

Affected Products 1

VendorProductVersionRange
openwebuiopen_webui* <0.8.11

References 1

  • github.com https://github.com/open-webui/open-webui/security/advisories/GHSA-v6qf-75pr-p96m
    ExploitPatchVendor Advisory

Remediation

  • github.com https://github.com/open-webui/open-webui/security/advisories/GHSA-v6qf-75pr-p96m
    ExploitPatchVendor Advisory