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SCA: security update for open-webui (GHSA-3g9q-v48f-hh9w)

high Tenable Cloud Security Plugin ID 447928

Description

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

 - Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.0 until
 0.11.1, the unauthenticated POST /oauth/backchannel-logout handler in backend/open_webui/utils/oauth.py
 fetched the OIDC discovery document and signing keys before validating a submitted logout token. Each
 request repeated uncached network fetches, and the signing-key lookup blocked the async event loop, so
 requests carrying invalid tokens could stall the single-worker instance and amplify traffic to the
 identity provider when ENABLE_OAUTH_BACKCHANNEL_LOGOUT was enabled. This issue is fixed in version 0.11.1.
 (CVE-2026-87011)

Solution

Update the open-webui library and its related packages to version 0.11.1 or later.

See Also

https://github.com/advisories/GHSA-3g9q-v48f-hh9w

Plugin Details

Severity: High

ID: 447928

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 9/11/2026

Updated: 9/11/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-87011

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/10/2026

Vulnerability Publication Date: 9/9/2026

Reference Information

CVE: CVE-2026-87011