CVE-2026-59221
High
Description
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.
SeverityHigh
CVSS7.7
Exploit probability—
ProductOpenwebui Open Webui
PublishedJul 9, 2026
First seenJul 9, 2026
How to fix
Update
- open-webui0.10.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| openwebui open_webui | 0.9.6 | — |
| open-webuiPyPI | 0.9.6 ≤ v < 0.10.0 | 0.10.0 |
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