CVE-2026-59223 | Open WebUI is an extensible, feature-rich, and user-friendly… | CVSS 4.3 MEDIUM

Description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, WEB_FETCH_FILTER_LIST matching compared configured host entries against URL strings and non-label-boundary suffixes, allowing path-based blocklist bypasses such as !internal.example.com in a URL path and sibling-domain matches that did not reflect the intended hostname policy. This issue is fixed in version 0.10.0.

Metadata

CVE ID: CVE-2026-59223
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-07-02 21:05 UTC
Published: 2026-07-09 17:00 UTC
Last updated: 2026-07-09 17:53 UTC
Primary CWE: CWE-693
CWE-693: Protection Mechanism Failure
Vendor / Product: open-webui / open-webui
Sources: cve.org · NVD

Severity & Metrics

4.3 MEDIUM CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

Affected products (1)

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

Weakness (CWE)

CWE	Source	Description
CWE-693	cna	CWE-693: Protection Mechanism Failure

CVSS scores (1)

Score	Severity	Version	Source	Vector
4.3	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References (4)

https://github.com/open-webui/open-webui/security/advisories/GHSA-qg3f-8x3j-ggf2 https://github.com/open-webui/open-webui/security/advisories/GHSA-qg3f-8x3j-ggf2
https://github.com/open-webui/open-webui/pull/25949 https://github.com/open-webui/open-webui/pull/25949
https://github.com/open-webui/open-webui/commit/087878ce848a4d828012068b5997dac480f43656 https://github.com/open-webui/open-webui/commit/087878ce848a4d828012068b5997dac480f43656
https://github.com/open-webui/open-webui/releases/tag/v0.10.0 https://github.com/open-webui/open-webui/releases/tag/v0.10.0