CVE-2026-45395

HighCVSS 7.2/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.2/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-269CWE-862

Affected software

VendorProductVersions
open-webuiopen-webui< 0.9.5

References

Timeline

Published
May 15, 2026
Last modified
Jun 17, 2026
NVD status
Analyzed

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