CVE-2026-59223

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.

• CWE-693

• https://github.com/open-webui/open-webui/commit/087878ce848a4d828012068b5997dac480f43656Patch
• https://github.com/open-webui/open-webui/pull/25949Issue Tracking, Patch
• https://github.com/open-webui/open-webui/releases/tag/v0.10.0Product, Release Notes
• https://github.com/open-webui/open-webui/security/advisories/GHSA-qg3f-8x3j-ggf2Vendor Advisory

Published

Jul 9, 2026

Last Modified

Jul 10, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

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