Self-Hosted AI Platform Vulnerability in Open WebUI
CVE-2026-88000

6.5MEDIUM

Key Information:

Vendor

Open-webui

Status
Open-webui
Vendor
CVE Published:
9 September 2026

What is CVE-2026-88000?

The Open WebUI platform has a vulnerability affecting versions 0.10.0 through 0.11.0, allowing authenticated users to exploit the DELETE operation on chat messages. When a user deletes a message using the chat-history deletion helper, the system can enter a synchronous infinite loop, blocking subsequent requests. This results in service disruptions for all users until the process is terminated. The issue has been rectified in version 0.11.1.

Affected Version(s)

open-webui >= 0.10.0, < 0.11.1

References

https://github.com/open-webui/open-webui/security/advisor...
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https://github.com/open-webui/open-webui/pull/28035
x_refsource_MISC
https://github.com/open-webui/open-webui/commit/b933292d6...
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CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.