CVE-2026-45395

HIGH EPSS 35.0%
Published May 15, 20261mo ago · Modified Jun 17, 20262w ago
7.2 CVSS 3.1
High
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 0.9.5, the tool update endpoint (POST /api/v1/tools/id/{id}/update) is missing the workspace.tools permission check that is present on the tool create endpoint. This allows a user who has been explicitly denied tool management capabilities ( and who the administrator considers untrusted for code execution ) to replace a tool's server-side Python content and trigger execution, bypassing the intended workspace.tools security boundary. This vulnerability is fixed in 0.9.5.

CVSS Details

Base Score
7.2
Exploitability
1.2
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required High
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
35.0% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-269 Improper Privilege Management Authorization
CWE-862 Missing Authorization Authorization

Affected Products 1

VendorProductVersionRange
openwebuiopen_webui* <0.9.5

References 1

  • github.com https://github.com/open-webui/open-webui/security/advisories/GHSA-p4fx-23fq-jfg6
    ExploitMitigationVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.