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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 s

mediumCVSS 4.3CVE-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.

Details

Source
NVD Recent CVEs (US · database · site)
Severity
medium — CVSS 4.3
Published
2026-07-09
Last updated
2026-07-10
Exploitation
Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-59223

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-59223coverage & exploitation statusNVD · CVE.org

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