PT-2026-56886 · Openwebui · Open-Webui

Published 2026-07-09 · Updated 2026-07-09 · CVE-2026-59223

Mitre

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

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.

Fix

Protection Mechanism Failure

Weakness Enumeration

CWE-693

Related Identifiers

CVE-2026-59223

Affected Products

Open-Webui

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-59223 · Security Note
• https://github.com/open-webui/open-webui/releases/tag/v0.10.0 · Note
• https://github.com/open-webui/open-webui/security/advisories/GHSA-qg3f-8x3j-ggf2 · Note
• https://github.com/open-webui/open-webui/pull/25949 · Note
• https://github.com/open-webui/open-webui/commit/087878ce848a4d828012068b5997dac480f43656 · Note