Unauthorized Access Vulnerability in Open WebUI AI Platform
CVE-2026-44554

8.1HIGH

Key Information:

Vendor

Open-webui

Status
Open-webui
Vendor
CVE Published:
15 May 2026

What is CVE-2026-44554?

Open WebUI, a self-hosted AI platform designed for offline operation, is vulnerable to an authorization bypass issue prior to version 0.9.0. The vulnerability exists in the POST /api/v1/retrieval/process/web endpoint, which allows users to submit a collection_name and an overwrite query parameter without properly validating user permissions. As a result, unauthorized users can potentially delete and overwrite data in accessible collections, leading to significant data integrity risks. This issue has been addressed 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:
8.1
Severity:
HIGH
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

.