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SCA: security update for open-webui (GHSA-m8f9-9whg-f4xr)

high Tenable Cloud Security Plugin ID 442196

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 0.9.3, the audio transcription upload endpoint takes the file extension from the user-supplied filename
 and saves the file under CACHE_DIR/audio/transcriptions/.. The /cache/{path} route serves these files via
 FileResponse, which sets Content-Type from the on-disk extension and emits no Content-Disposition. A
 verified user with the default-on chat.stt permission can upload a polyglot WAV+HTML file named pwn.html
 and trick any other user into opening the resulting URL — the response comes back as text/html and any
 embedded <script> runs in the Open WebUI origin. This vulnerability is fixed in 0.9.3. (CVE-2026-45315)

Solution

Update the open-webui library and its related packages to version 0.9.3 or later.

See Also

https://github.com/advisories/GHSA-m8f9-9whg-f4xr

Plugin Details

Severity: High

ID: 442196

Version: Revision 1.4

Type: Local

Family: SCA Checks

Published: 5/19/2026

Updated: 7/2/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.8

Percentile: 57.61

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-45315

CVSS v3

Risk Factor: High

Base Score: 8.7

Temporal Score: 7.8

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/14/2026

Vulnerability Publication Date: 5/14/2026

Reference Information

CVE: CVE-2026-45315