CVSS 3.1
7.7 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:NCVE-2026-59221
High (7.7) in openwebui open webui. EPSS 0.5% chance of exploitation in the next 30 days. Fixed in open-webui 0.10.0.
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.
Severity
- EPSS
- 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-22, CWE-918
- Published
- Modified
- Record from
- the NVD, synced
Affected
- openwebui:open_webui
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-frvj-c5qp-xj4w | PyPI | open-webui | >=0.9.6 <0.10.0 | 0.10.0 |
| PYSEC-2026-3597 | PyPI | open-webui | >=0.9.6 <0.10.0 | 0.10.0 |
References
- https://github.com/open-webui/open-webui/commit/05098d25a58d03738e01c4e85e8852c3b4ad849c
- https://github.com/open-webui/open-webui/pull/26050
- https://github.com/open-webui/open-webui/releases/tag/v0.10.0
- https://github.com/open-webui/open-webui/security/advisories/GHSA-frvj-c5qp-xj4w
- https://github.com/open-webui/open-webui/security/advisories/GHSA-frvj-c5qp-xj4w