CVE-2026-59223

Summary

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.

Affected Software

Weaknesses

• CWE-693: CWE-693: Protection Mechanism Failure

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• 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/commit/087878ce848a4d828012068b5997dac480f43656
• https://github.com/open-webui/open-webui/releases/tag/v0.10.0

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