CVE-2026-59224 | Open WebUI is an extensible, feature-rich, and user-friendly… | CVSS 8.0 HIGH

Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, backend/open_webui/routers/terminals.py built the ws_terminal upstream URL from an unencoded session_id and appended user_id as a query parameter, allowing query injection to make the terminal backend resolve another user identity; the HTTP proxy path also forwarded X-User-Id as an integrity-unbound identity claim. This issue is fixed in version 0.10.0.

Metadata

CVE ID: CVE-2026-59224
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-07-02 21:05 UTC
Published: 2026-07-09 17:09 UTC
Last updated: 2026-07-10 03:55 UTC
Primary CWE: CWE-287
CWE-287: Improper Authentication
Vendor / Product: open-webui / open-webui
Sources: cve.org · NVD

Severity & Metrics

8.0 HIGH CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
open-webui	open-webui	—	< 0.10.0

Weakness (CWE)

CWE	Source	Description
CWE-287	cna	CWE-287: Improper Authentication
CWE-290	cna	CWE-290: Authentication Bypass by Spoofing

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.0	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H

References (4)

https://github.com/open-webui/open-webui/security/advisories/GHSA-j657-m4c4-24jq https://github.com/open-webui/open-webui/security/advisories/GHSA-j657-m4c4-24jq
https://github.com/open-webui/open-webui/pull/26042 https://github.com/open-webui/open-webui/pull/26042
https://github.com/open-webui/open-webui/commit/5f3a628a8d291bb5d33e1a0b0c89fb62a2927934 https://github.com/open-webui/open-webui/commit/5f3a628a8d291bb5d33e1a0b0c89fb62a2927934
https://github.com/open-webui/open-webui/releases/tag/v0.10.0 https://github.com/open-webui/open-webui/releases/tag/v0.10.0