WebSocket Vulnerability in Open WebUI Self-Hosted AI Platform
CVE-2026-70490

6.3MEDIUM

Key Information:

Vendor

Open-webui

Status
Open-webui
Vendor
CVE Published:
4 August 2026

What is CVE-2026-70490?

The Open WebUI platform, a self-hosted AI solution, has a security weakness in its WebSocket implementation. Specifically, in versions 0.8.8 through 0.11.0, the initial message's JWT authentication does not enforce the necessary verified-user role gate for backend terminal access. This condition allows accounts pending approval, or those that have been deactivated to pending status, to initiate an interactive terminal session if a terminal server is configured. Unlike HTTP terminal routes that correctly reject such accounts, this flaw undermines the control mechanisms intended for secure terminal access. The issue has been resolved in version 0.11.0, emphasizing the importance of keeping your software up-to-date.

Affected Version(s)

open-webui >= 0.8.8, < 0.11.0

References

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

CVSS V3.1

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.