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CVE-2026-59223Open WebUI: `WEB_FETCH_FILTER_LIST` host allow/block filter bypassable via URL path and non-label-boundary matching
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.
4.3 MEDIUMEPSS 0.38%Not in KEVNVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 4.3 | MEDIUM | 3.1GitHub_M (CNA) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
Details
- CVE ID
- CVE-2026-59223
- Status
- Analyzed
- Assigner (CNA)
- GitHub_M
- Published
- Jul 9, 2026
- Last modified
- 2026-07-10 17:39 UTC
- Weaknesses
- CWE-693 · Protection Mechanism Failure
Affected Products
As published by the CNA in the CVE record.
open-webuiopen-webui1 version range
- < 0.10.0
References
- github.com https://github.com/open-webui/open-webui/commit/087878ce848a4d828012068b5997dac480f43656
- github.com https://github.com/open-webui/open-webui/pull/25949
- github.com https://github.com/open-webui/open-webui/releases/tag/v0.10.0
- github.com https://github.com/open-webui/open-webui/security/advisories/GHSA-qg3f-8x3j-ggf2