CVE-2026-59221

HIGH7.7

open-webui terminal proxy path traversal guard bypass via 9x encoded traversal

Published Jul 9, 2026

Modified 1 months ago

Details

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

WEB

https://github.com/open-webui/open-webui/commit/05098d25a58d03738e01c4e85e8852c3b4ad849c

WEB

https://github.com/open-webui/open-webui/pull/26050

WEB

https://github.com/open-webui/open-webui/releases/tag/v0.10.0

WEB

https://github.com/open-webui/open-webui/security/advisories/GHSA-frvj-c5qp-xj4w

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-59221

CVSS Analysis