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.
References
| Link | Resource |
|---|---|
| https://github.com/open-webui/open-webui/security/advisories/GHSA-p4fx-23fq-jfg6 | Exploit Mitigation Vendor Advisory |
| https://github.com/open-webui/open-webui/security/advisories/GHSA-p4fx-23fq-jfg6 | Exploit Mitigation Vendor Advisory |
Configurations
History
19 May 2026, 03:05
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Openwebui
Openwebui open Webui |
|
| CPE | cpe:2.3:a:openwebui:open_webui:*:*:*:*:*:*:*:* | |
| References | () https://github.com/open-webui/open-webui/security/advisories/GHSA-p4fx-23fq-jfg6 - Exploit, Mitigation, Vendor Advisory |
18 May 2026, 13:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/open-webui/open-webui/security/advisories/GHSA-p4fx-23fq-jfg6 - |
15 May 2026, 21:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-15 21:16
Updated : 2026-05-19 03:05
NVD link : CVE-2026-45395
Mitre link : CVE-2026-45395
CVE.ORG link : CVE-2026-45395
JSON object : View
Products Affected
openwebui
- open_webui