CVE-2026-59221
HIGHopen-webui terminal proxy path traversal guard bypass via 9x encoded traversal
Title source: cnaDescription
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 before 0.10.0, _sanitize_proxy_path in backend/open_webui/routers/terminals.py decoded proxy paths only eight times, allowing a nine-times percent-encoded ../ traversal value to pass normalization checks and be decoded by the upstream terminal server. 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-frvj-c5qp-xj4w
X_Refsource_Misc x_refsource_misc
https://github.com/open-webui/open-webui/pull/26050
X_Refsource_Misc x_refsource_misc
https://github.com/open-webui/open-webui/commit/05098d25a58d03738e01c4e85e8852c3b4ad849c
X_Refsource_Misc x_refsource_misc
https://github.com/open-webui/open-webui/releases/tag/v0.10.0
Scores
CVSS v3
7.7
EPSS
0.0036
EPSS Percentile
28.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-22
CWE-918
Status
published
Products (3)
open-webui/open-webui
>= 0.9.6, < 0.10.0
openwebui/open_webui
0.9.6
pypi/open-webui
0.9.6 - 0.10.0PyPI
Published
Jul 09, 2026
Tracked Since
Jul 09, 2026