SCA: security update for open-webui (GHSA-jjp7-g2jw-wh3j)

high Tenable Cloud Security Plugin ID 439363

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 version 0.8.6, any authenticated user can overwrite any file's content by ID through the `POST
/api/v1/retrieval/process/files/batch` endpoint. The endpoint performs no ownership check, so a regular
user with read access to a shared knowledge base can obtain file UUIDs via `GET
/api/v1/knowledge/{id}/files` and then overwrite those files, escalating from read to write. The
overwritten content is served to the LLM via RAG, meaning the attacker controls what the model tells other
users. Version 0.8.6 patches the issue. (CVE-2026-28788)

Solution

Update the open-webui library and its related packages to version 0.8.6 or later.

Plugin Details

Severity: High

ID: 439363

Version: Revision 1.3

Type: Local

Family: SCA Checks

Published: 3/27/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 52.04

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2026-28788

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.4

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/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: 3/27/2026

Vulnerability Publication Date: 3/26/2026

Reference Information

CVE: CVE-2026-28788

cwe: CWE-639

Detections

Analytics