Improper Access Control in Open WebUI Affects Self-Hosted AI Platform
CVE-2026-44562

6.5MEDIUM

Key Information:

Vendor

Open-webui

Status
Open-webui
Vendor
CVE Published:
15 May 2026

What is CVE-2026-44562?

The Open WebUI platform, prior to version 0.9.0, is susceptible to an improper access control vulnerability. This issue allows users with the 'workspace.models_import' permission to overwrite existing models in the database without proper ownership checks. If a model's ID matches an existing model, the attacker can merge their payload with the vulnerable model's data, effectively compromising its integrity. This bypass of access grant restrictions undermines security protocols present in other model mutation endpoints. The flaw was addressed and resolved in version 0.9.0.

Affected Version(s)

open-webui < 0.9.0

References

https://github.com/open-webui/open-webui/security/advisor...
x_refsource_CONFIRM

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.