CVE-2026-59223
MEDIUMOpen WebUI: `WEB_FETCH_FILTER_LIST` host allow/block filter bypassable via URL path and non-label-boundary matching
Title source: cnaDescription
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.
References (4)
Core 4
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/open-webui/open-webui/security/advisories/GHSA-qg3f-8x3j-ggf2
X_Refsource_Misc x_refsource_misc
https://github.com/open-webui/open-webui/pull/25949
X_Refsource_Misc x_refsource_misc
https://github.com/open-webui/open-webui/commit/087878ce848a4d828012068b5997dac480f43656
X_Refsource_Misc x_refsource_misc
https://github.com/open-webui/open-webui/releases/tag/v0.10.0
Scores
CVSS v3
4.3
EPSS
0.0022
EPSS Percentile
12.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-693
Status
published
Products (2)
open-webui/open-webui
< 0.10.0
openwebui/open_webui
< 0.10.0
Published
Jul 09, 2026
Tracked Since
Jul 09, 2026