Write Access Vulnerability in Open WebUI AI Platform by Open WebUI
CVE-2026-45386

4.3MEDIUM

Key Information:

Vendor

Open-webui

Status
Open-webui
Vendor
CVE Published:
15 May 2026

What is CVE-2026-45386?

The Open WebUI AI platform contains an improper access control vulnerability. In versions prior to 0.9.5, the Pin/Unpin operation incorrectly allows users with only read permissions to pin or unpin messages in standard channels. This flaw could lead to unauthorized modifications of message visibility and organization, compromising the integrity of the communication within the platform. It is advised to upgrade to version 0.9.5 or later to ensure secure message handling.

Affected Version(s)

open-webui < 0.9.5

References

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

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.