CVE-2026-54019 | Open WebUI is a self-hosted artificial intelligence platform… | CVSS 6.5 MEDIUM

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.

Metadata

CVE ID: CVE-2026-54019
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-06-11 16:34 UTC
Published: 2026-06-23 16:41 UTC
Last updated: 2026-06-23 17:53 UTC
Primary CWE: CWE-862
CWE-862: Missing Authorization
Vendor / Product: open-webui / open-webui
Sources: cve.org · NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
open-webui	open-webui	—	< 0.9.6

Weakness (CWE)

CWE	Source	Description
CWE-862	cna	CWE-862: Missing Authorization
CWE-943	cna	CWE-943: Improper Neutralization of Special Elements in Data Query Logic

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.5	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References (1)

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