Detections
Analytics

SCA: security update for open-webui (GHSA-9vvh-qmjx-p4q8)

high Tenable Self-Hosted Container Security Plugin ID 441621

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior
 to 0.9.0, Open WebUI supports model composition via base_model_id: a user-defined model (e.g., "Cheap
 Assistant") can reference an existing base model (e.g., "gpt-4-turbo-restricted") that provides the actual
 inference capability. When a user queries the composed model, the access control pipeline verifies the
 user has access to the composed model but never re-verifies access to the chained base model.
 Additionally, the model creation and import endpoints accept arbitrary base_model_id values without
 checking that the caller has access to that base model. Combined, this allows any user with the default
 model creation permission to create a model that chains to a restricted base model — and then invoke it,
 causing the server to dispatch the request to the restricted base model using the admin-configured API
 key. This vulnerability is fixed in 0.9.0. (CVE-2026-44555)

Solution

Update the open-webui library and its related packages to version 0.9.0 or later.

See Also

https://github.com/advisories/GHSA-9vvh-qmjx-p4q8

Plugin Details

Severity: High

ID: 441621

Version: Revision 1.6

Type: Local

Family: SCA Checks

Published: 5/9/2026

Updated: 6/1/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5.5

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 8

Temporal Score: 6.3

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:P/A:P

CVSS Score Source: CVE-2026-44555

CVSS v3

Risk Factor: High

Base Score: 7.6

Temporal Score: 6.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/8/2026

Vulnerability Publication Date: 5/8/2026

Reference Information

CVE: CVE-2026-44555

cwe: CWE-862