CVE-2026-54019

MEDIUM EPSS 19.8%

Published Jun 23, 20261w ago · Modified Jun 23, 20261w ago

6.5 CVSS 3.1

Medium

Published Jun 23, 2026 1w ago

Last Modified Jun 23, 2026 1w ago

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI added collection-level ACL checks, but the patch can still be bypassed when Milvus multitenancy mode is enabled. The ACL allows unknown non-KB collection names as legacy/ephemeral collections. In Milvus multitenancy mode, that user-controlled collection name becomes a resource_id and is interpolated into a Milvus expression without escaping. This is caused by an incomplete fix for CVE-2026-44560 This vulnerability is fixed in 0.9.6.

CVSS Details

Base Score

6.5

Exploitability

2.8

Impact

3.6

Vector string

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector Network

Attack Complexity Low

Privileges Required Low

User Interaction None

Scope Unchanged

Confidentiality High

Integrity None

Availability None

Threat Intelligence

EPSS Exploit Probability

19.8% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 2

CWE-862 Missing Authorization Authorization

CWE-943

References 1

github.com https://github.com/open-webui/open-webui/security/advisories/GHSA-p5cp-r7rg-qpxc

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.