CVE-2026-59223: Open WebUI: `WEB_FETCH_FILTER_LIST` host allow/block filter bypassable via URL path and non-label-boundary matching
The administrator-configured WEB_FETCH_FILTER_LIST (the allow/block list applied to server-side web fetches: RAG URL ingestion, URL-to-markdown, web-search content fetch) matches hostnames incorrectly, so the filter can be bypassed.
References
- github.com/advisories/GHSA-qg3f-8x3j-ggf2
- github.com/open-webui/open-webui/commit/087878ce848a4d828012068b5997dac480f43656
- github.com/open-webui/open-webui/pull/25949
- github.com/open-webui/open-webui/releases/tag/v0.10.0
- github.com/open-webui/open-webui/security/advisories/GHSA-qg3f-8x3j-ggf2
- nvd.nist.gov/vuln/detail/CVE-2026-59223
Code Behaviors & Features
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